The Smithsonian has launched an ambitious project to scan millions of items and make them available to the world on a searchable database. CBS reporter […]

The post 3-D imaging takes Smithsonian from Washington to the world appeared first on Smithsonian Insider.

Linn Meyers (American, b. Washington, D.C., 1968; lives and works in Washington, D.C.) created her largest work, “Our View From Here,” at the Smithsonian’s Hirshhorn […]

The post Linn Meyers “Our View From Here” Time-lapse appeared first on Smithsonian Insider.

Happy Holidays from the Smithsonian’s National Air and Space Museum!

The post Happy Holidays from the National Air and Space Museum appeared first on Smithsonian Insider.

The post Happy Holidays from Smithsonian’s National Zoo appeared first on Smithsonian Insider.

Yesterday, we heard about the hyper-loop, a system that could get you from L.A. to San Francisco in about 30 minutes without losing your eyeballs.

Steve Julian: Business analyst Mark Lacter, that might come in handy given how crowded California's air corridor has become...

Mark Lacter: We'll talk about the hyper-loop in a moment, Steve, but yes, the L.A.-to-San Francisco air route is the busiest in the U.S., and it's already the most competitive.  We're talking about more than 50 flights a day, which - if you spread them out between six in the morning and 10:30 at night - there'd be one flight every 20 minutes.  But, Delta obviously thinks there's room for more because it's announced an hourly shuttle between the two cities.  That's another 14 daily flights beginning September 3.  The airline will be using a somewhat smaller jet, and it sounds as if the focus will be on the business traveler, with free newspapers, wine, and beer.

Julian: How much will it cost, do we know?

Lacter: As usual, it's a lot cheaper if you make an advance purchase, but if you're buying your tickets at the last minute - which is what a lot of business travelers do - roundtrip runs a hefty $430.  Actually, this Bay Area shuttle is just the latest effort by Delta to expand out of LAX, which is different from other major airports in that it doesn't have any one airline that dominates (United has a slight edge in market share over American, with Delta about three percentage points behind).  American also has been adding flights out of LAX.

Julian: Sounds like the airline business is improving...

Lacter: That's what happens when you pack planes to the absolute max, which is bad news for travelers being crammed into coach seats.  But it's good news for LAX, which continues to be the airport of choice among airlines looking to add service - matter of fact, domestic passenger traffic was up almost 8 percent in June compared with a year earlier.  Some of those gains might be at the expense of service elsewhere - most especially Ontario Airport, which has seen a big exodus among airlines and passengers.  Ontario city officials have been trying to regain control of the airport, which has been operated by the city of Los Angeles.

Julian: Back to the hyper-loop - is this kind of transport possible?

Lacter: Well, it's the brainchild of billionaire Elon Musk, and you never say never with this guy.  He started the electric car company Tesla and the private space company Space X.  The hyper-loop is a high-speed system of passenger pods that would travel on a cushion of air (think of air hockey table).  The pods would travel at more than 700 miles per hour, but they wouldn't result in sonic booms that severely restricted the Concorde aircraft.  Of course, anything that promises super-speed travel is bound to get people talking - and, from what the physics professors are saying, the Musk idea seems feasible.

Julian: How would its cost compare to the bullet train?

Lacter: He says a lot cheaper.  The price tag on the train is $70 billion at last check; Musk says he can do his for $6 billion.  But, the issue isn't so much the cost or even the technology, but the politics.  As a rule, governments do not think outside the box, and that's what a project like this is all about.  Already, you have bullet train supporters saying that the hyper-loop is impossible, but what they're really saying is we have a lot riding on the train, and we don't want this guy to mess it up.

Julian: But, how much demand is there for high-speed transport?

Lacter: You'd think there would be a lot, but when Boeing came up with a nifty idea for a souped-up plane that would shave almost an hour from L.A. to New York, the airlines said no because it would require more fuel - and that would mean raising fares.  Musk says his system would be a lot cheaper than traveling by plane, which could be a game changer in the attitudes about going places.  But, those attitudes won't change until the thing is actually built, and that can't realistically happen until attitudes change.  That's the ultimate problem.

Julian: Hence, why we're content to squeeze into coach.

Lacter: Yep.

Mark Lacter is a contributing writer for Los Angeles Magazine and writes the business blog at LA Observed.com.

This content is from Southern California Public Radio. View the original story at SCPR.org.

“Orchids: A View from the East,” a joint exhibition by Smithsonian Gardens and the U.S. Botanic Garden, opens at the Smithsonian’s National Museum of Natural History […]

The post Orchids: A View from the East appeared first on Smithsonian Insider.

When you’re caught under the mistletoe, the tradition is to kiss the person next to you. But this holiday season you may want to wow them first with some cool mistletoe facts from Smithsonian botanist Sylvia Orli.

The post Mistletoe facts from a Smithsonian botanist appeared first on Smithsonian Insider.

The move enhances coordination efforts for the 46-plot research network, which partners with more than 75 institutions in 21 countries.

The post Global forest science research center moves from Harvard to the National Museum of Natural History, Washington, D.C. appeared first on Smithsonian Insider.

Going for the gut will soon become standard protocol for scientists working to unravel the complex living web of interactions between plants and animals on […]

The post Going for the gut: DNA from beetle stomachs reveals complex network appeared first on Smithsonian Insider.

With net in hand and eyes peeled, Mauren Turcatel spent two-weeks last October chasing blood-thirsty predators through the Amazon jungle of Brazil. One-by-one they appeared […]

The post Blood-thirsty jungle horse-flies catch big chill from Smithsonian entomologist appeared first on Smithsonian Insider.

New results from a long-term Smithsonian study are providing strong evidence of the dramatic impact high numbers of white-tailed deer (Odocoileus virginianus) are having upon […]

The post Deer Discovery: Invasive Plants Get Boost from too Many Deer appeared first on Smithsonian Insider.

Profound ideas don’t need to be complicated. A simple cube made of aluminum tubing, a centerpiece of a new exhibit “Life in One Cubic Foot,” […]

The post From Rochester to Polynesia, a simple cube unveils Earth’s dazzling biological diversity appeared first on Smithsonian Insider.

In the dark recesses of an underground fungus garden, a Panamanian leaf-cutting ant plucks a tuft of mycelia, the wispy part of the basidiomycete fungus […]

The post Mystery solved? Ants Protect Young From Infection By Cocooning Them in Fungus appeared first on Smithsonian Insider.

At the approach of a hungry parrot snake, a tree frog egg transforms from a haven to a prison. With no parent to offer protection, […]

The post Mystery solved: frogs use snout glands in emergency jail break appeared first on Smithsonian Insider.

We can save frogs with science. Release trials in the wild begin this spring. On Earth Day weekend, the Smithsonian is convening the Earth Optimism […]

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If you’ve seen the movie Jurassic Park, you know that amber played a significant role in rebuilding a lost world: A mosquito trapped within its […]

The post Resin from shipwreck hints at trade routes and botany of ancient Asia appeared first on Smithsonian Insider.

Ninety Limosa harlequin frogs (Atelopus limosus) bred in human care are braving the elements of the wild after Smithsonian scientists sent them out into the […]

The post Scientists Release Frogs Wearing Mini Radio Transmitters appeared first on Smithsonian Insider.

How specific fungi interact with seeds in tropical forest soils may be the ultimate arbiter in the struggle for survival among tropical trees. “Depending on […]

The post Study reveals soil fungi has final say in survival of seeds from tropical trees appeared first on Smithsonian Insider.

This work presents a technique for extracting the detailed shape of peaks with extended, overlapping tails in an X-ray powder diffraction pattern. The application discussed here concerns crystallite size broadening, though the technique can be applied to spectra of any origin and without regard to how the profiles are to be subsequently analyzed. Historically, the extraction of profile shapes has been difficult due to the complexity of determining the background under the peak, resulting in an offset of the low-frequency components of the Fourier transform of the peak known as the `hook' problem. The use of a carefully considered statistical weighting function in a non-linear least-squares fit, followed by summing the residuals from such a fit with the fit itself, allows one to extract the full shape of an isolated peak, without contributions from either the background or adjacent peaks. The extracted shape, consisting of the fit function recombined with the residuals, is not dependent on any specific shape model. The application of this to analysis of microstructure is performed independently of global parametric models, which would reduce the number of refined parameters; therefore the technique requires high-quality data to produce results of interest. The effectiveness of the technique is demonstrated by extraction of Fourier transforms of peaks from two sets of size-broadened materials with two differing pieces of equipment.

It is shown how to reconstruct the stacking sequence from the pairwise correlation functions between layers in close-packed structures. First, of theoretical interest, the analytical formulation and solution of the problem are presented when the exact pairwise correlation counts are known. In the second part, the practical problem is approached. A simulated annealing procedure is developed to solve the problem using as initial guess approximate solutions from previous treatments. The robustness of the procedure is tested with synthetic data, followed by an experimental example. The developed approach performs robustly over different synthetic and experimental data, comparing favorably with the reported methods.

Diffuse scattering is a rich source of information about disorder in crystalline materials, which can be modelled using atomistic techniques such as Monte Carlo and molecular dynamics simulations. Modern X-ray and neutron scattering instruments can rapidly measure large volumes of diffuse-scattering data. Unfortunately, current algorithms for atomistic diffuse-scattering calculations are too slow to model large data sets completely, because the fast Fourier transform (FFT) algorithm has long been considered unsuitable for such calculations [Butler & Welberry (1992). J. Appl. Cryst. 25, 391–399]. Here, a new approach is presented for ultrafast calculation of atomistic diffuse-scattering patterns. It is shown that the FFT can actually be used to perform such calculations rapidly, and that a fast method based on sampling theory can be used to reduce high-frequency noise in the calculations. These algorithms are benchmarked using realistic examples of compositional, magnetic and displacive disorder. They accelerate the calculations by a factor of at least 102, making refinement of atomistic models to large diffuse-scattering volumes practical.

Simulink might produce an incorrect sorted order for a model that meets all of the following conditions:

• The model contains blocks from the SoC Blockset
• The Signal logging option is selected in the model configuration set
• Signals using asynchronous sample time are configured for logging

Experimental electron-density studies based on high-resolution diffraction experiments allow halogen bonds between heavy halogens to be classified. The topological properties of the electron density in Cl⋯Cl contacts vary smoothly as a function of the inter­action distance. The situation is less straightforward for halogen bonds between iodine and small electronegative nucleophiles, such as nitro­gen or oxygen, where the electron density in the bond critical point does not simply increase for shorter distances. The number of successful charge–density studies involving iodine is small, but at least individual examples for three cases have been observed. (a) Very short halogen bonds between electron-rich nucleophiles and heavy halogen atoms resemble three-centre–four-electron bonds, with a rather symmetric heavy halogen and without an appreciable σ hole. (b) For a narrow inter­mediate range of halogen bonds, the asymmetric electronic situation for the heavy halogen with a pronounced σ hole leads to rather low electron density in the (3,−1) critical point of the halogen bond; the properties of this bond critical point cannot fully describe the nature of the associated inter­action. (c) For longer and presumably weaker contacts, the electron density in the halogen bond critical point is only to a minor extent reduced by the presence of the σ hole and hence may be higher than in the aforementioned case. In addition to the electron density and its derived properties, the halogen–carbon bond distance opposite to the σ hole and the Raman frequency for the associated vibration emerge as alternative criteria to gauge the halogen-bond strength. We find exceptionally long C—I distances for tetra­fluoro­diiodo­benzene molecules in cocrystals with short halogen bonds and a significant red shift for their Raman vibrations.

A still from "POWER/RANGERS," a highly-produced Power Rangers fan film starring James Van Der Beek and Katee Sackhoff.

Update 2/28: The "POWER/RANGERS" film is back on YouTube and Vimeo. Watch the censored YouTube version with a new viewer discretion disclaimer here:

POWER/RANGERS

You can also watch the Vimeo version, featuring more adult content. The video's description emphasizes its lack of connection in any official way to the Power Rangers:

"Deboot of the Power Rangers. My take on the FAN FILM. Not a pilot, not a series, not for profit, strictly for exhibition. This is a bootleg experiment not affiliated or endorsed by Saban Entertainment or Lionsgate nor is it selling any product. I claim no rights to any of the characters (don't send me any money, not kickstarted, this film is free). This is the NSFW version. An alternate safe version is on youtube."

Director Joseph Kahn tells Deadline, "They put these disclaimers on so kids so don’t confuse our super-violent film with their Power Rangers brand. There are no hard feelings. We signed contracts. We can play it anywhere we want on all platforms. I think they realized that people just want to see it."

Previously: A Power Rangers short film went viral this week, starring Katee Sackhoff (Battlestar Galactica) and James Van Der Beek (Dawson!) in a Tarantino-meets-sci-fi take on a dark future for the formerly Mighty Morphin'.

The company behind the 22-year history of the kids/toy icons issued takedown requests, leading to it being pulled from Vimeo and, on Thursday afternoon, a toned-down version being taken off YouTube. At the time, the video had received over 10 million views. It's still available to watch in this Facebook embed from the producer's Facebook page:

POWER/RANGERS Facebook embed

The film was directed by Joseph Kahn, best known as the music video director behind clips like Taylor Swift's "Blank Space" as well as videos for Britney Spears, U2 and others, and produced by Adi Shankar, who was also behind "The Grey" and "Dredd." Kahn co-wrote the film with Van Der Beek and lesser-known writer Dutch Southern.

This isn't the first quasi-legal fan film produced by Shankar. He's also done the same with Marvel Comics characters the Punisher and Venom. The Punisher film even had one of the actors who played the character on screen, Thomas Jane.

Watch those films (Warning: Adult language and violence):

Punisher short

Venom short

Kahn tells HitFix that Shankar came to him, offering him the chance to reboot an existing property.

One reason for the current legal contentiousness: The Power Rangers are set to hit the big screen next year in a Lionsgate film. Kahn says that, if that film was offered to him, he wouldn't be interested.

"I wouldn't even want to make 'Power Rangers: The Movie' for real," Kahn told HitFix. "Like if I had to make a 'Power Rangers' movie, this is it. It's 14 minutes long, and it's violent, and this is what I have in me. If they offered me the $200 million version, the PG-13 version, I literally wouldn't do it."

There's been a strong response to the video, but the response has been mixed — among the original Power Rangers. The original Green Ranger, actor Jason David Frank, said on Facebook that he was approached to be in the movie but declined. (The film's director denies this claim, saying that Frank must have confused them with another project.) Frank also criticized the adult content.

"I'm just a PG-13 guy," Frank said. "The cuss words, the drugs, all this other stuff, it doesn't fly with me." He says that he thinks the Power Rangers are still connected with kids, and he didn't like the idea of doing a dark and gritty version in that context. (Watch his video below.)

Green Ranger video

But the original Pink Ranger, actress Amy Jo Johnson, gave the film her stamp of approval, which Sackhoff enthusiastically responded to.

Amy Jo Johnson tweet 1

Amy Jo Johnson tweet 2

Katee Sackhoff tweet

Sackhoff told the Nerdcore Movement site that she loves fan films.

"Doing a fan video is kind of the biggest honor you can give a franchise. It’s something that inspired you so much that you want to create," Sackhoff said.

Kahn defended "POWER/RANGERS" on Twitter as being protected due to it being a satire and also cited fair use laws and free speech. He argued that there are lots of other fan films and pointed out that YouTube showed more leniency, leaving it up.

"Every image in POWER/RANGERS is original footage," Kahn wrote in a series of tweets to Vimeo. "Nothing was pre-existing. There is no copyrighted footage in the short."

He also said that it's being given away for free and that Kahn paid for it himself.

Kahn tweet

"It is just as if I drew a pic of Power Rangers on a napkin and I gave it to my friend," Kahn wrote. "Is it illegal to give pic I drew of a character on a napkin to someone for free? No. The world is watching your actions right now."

In a touch of irony, the video had been selected as a Vimeo staff pick before the service took it down. They also responded to complaints about it being taken down, saying that they had to due to the Digital Millennium Copyright Act, and that they would restore the video immediately if the copyright claim was withdrawn, telling fans to complain to Power Rangers copyright holder Saban.

YouTube tweet

Despite the short film's success, hardcore Power Rangers fans are less sure about it, Shamus Kelley tells KPCC. Kelley created his own Rangers fan series, as well as co-hosting a Power Rangers podcast with over 300 episodes so far.

Casual fans are "far more open to the idea of dark/gritty because they see it as the show growing up with them," Kelley says. To hardcore fans, "it was either an abomination or the greatest unintended parody ever."

Kahn tells HitFix that the parody, of both Power Rangers and fan films in general, is definitely intended.

"The dark and gritty reboot thing is such a cliché that the intention was not only to make it dark and gritty but make it even darker and grittier than you could possibly imagine, hence the brains, the blood and the violence and the sex," Kahn said.

Kahn is set to answer questions about the film in a Reddit AMA on Friday at 2 p.m. We'll have to wait and see if there will be anywhere to watch it at the time.

Take a look behind the scenes of "POWER/RANGERS" via posts from the director and stars:

Behind the scenes tweet

Behind the scenes Instagram

Fight training 1

Fight training 2

The film also includes a techno take on the classic Power Rangers theme song, which you can listen to here:

Techno Power Rangers

This story has been updated.

This content is from Southern California Public Radio. View the original story at SCPR.org.

Brock Lesnar after losing his championship in the main event of Wrestlemania 31.; Credit: WWE

World Wrestling Entertainment held their annual Wrestlemania show last weekend in Northern California, the culmination of another year's worth of spectacle. According to the company, it was their highest grossing event of all-time, drawing $12.6 million, with an official attendance placing it fifth on their list of all-time crowds for the event. The show was headlined by former UFC Heavyweight Champion Brock Lesnar going up against up-and-coming star (and a relative of Dwayne "The Rock" Johnson) Roman Reigns.

WWE Network

It comes at a time when the company has embarked on a new way of making money: their over-the-top online programming provider, the WWE Network, where fans can pay $9.99 a month to see programming including what formerly used to cost $45 for most shows and $60 for Wrestlemania. They're one year in now on gambling that enough fans will want the Network that it will ultimately make them more money in the long-term, despite losing that pay-per-view revenue. Wall Street doesn't appear to be buying it — after announcing the day after Wrestlemania that they'd hit 1.3 million subscribers, WWE's stock took a significant loss.

"The point is not whether it's real or if it's staged. The point is, are you entertained by it, or not?" former WWE announcer Jim Ross told KPCC in an interview. WWE is looking for more fans to be entertained enough to plunk down $9.99 for all the pro wrestling content they want.

NXT

They're also in a transitional period with their audiences. They've launched a new show that's only on the Network called "NXT," turning their minor league into a program targeting hardcore pro wrestling fans with a different style of show than the more family-targeted "Raw" and "Smackdown." It's also where they groom potential future stars, many of whom seem to break the mold of some of the traditional stars on WWE's main roster.

They're signing up talent that's been getting buzz on the independent circuits, trying to create their own underground movement that hopefully spells money, and taking the NXT brand on tour for the first time. On the Raw after Wrestlemania, several NXT stars made their debut on the main roster. That follows a sell-out crowd (albeit at a smaller 5,000 seat venue) on the Friday night before Wrestlemania for a non-televised NXT show.

Give Divas a chance

WWE also faces cultural forces pushing them in new directions, including a difference in how society deals with gender. When WWE executive Stephanie McMahon, daughter of the famed Vince McMahon, tweeted in support of Patricia Arquette's speech calling for greater equality for women at the Academy Awards, one of their own wrestlers, AJ Lee, responded by publicly calling Stephanie McMahon out on Twitter for not promoting the women in her own company equally and paying them less than the male stars.

AJ tweet 1

AJ tweet 2

Of course, the women in the company aren't given the same prominence as the men in part because it's felt that they won't make the company as much money. Still, it forced WWE's hand and Stephanie McMahon and the company as a whole publicly embraced the idea of giving the women (who WWE brands as "divas") a chance with the Give Divas A Chance movement (and accompanying trending hashtag).

What's next

The women have been promoted nearly equal to the men in that underground NXT league, but only time will tell if it continues to trickle upward. Wrestlemania didn't seem to show huge promise of that happening, with the one women's match of the show only getting a few minutes in the ring. However, the show also included a high-profile storyline with UFC female fighter and champion Ronda Rousey alongside the Rock, going up against Stephanie McMahon and Triple H, so there appears to be the room for women in prominent positions when they have the right storyline.

Whether WWE is able to wade through these forces of change to make more money — and perhaps regain some of the cultural currency that they've lost since becoming a monopoly and purchasing their top competition in 2001 — remains to be seen. They've stayed relatively steady despite a challenge from UFC, which many see as being what pro wrestling would be like if WWE didn't present fictional  They'll have to hope that giving new stars, including "divas," a chance will take them to another level.

This content is from Southern California Public Radio. View the original story at SCPR.org.

The inversion of X-ray reflectivity to reveal the topography of a one-dimensional interface is evaluated through model calculations.

India-based digital payments platform Mintoak has secured a...

Parents of students at Miramonte Elementary School escort children out of school on Feb. 6, 2012.; Credit: Grant Slater/KPCC

A lawyer representing 58 students who settled a lawsuit related to the Miramonte sex abuse scandal two years ago said his clients are owed more money because another group of students who settled their lawsuit last fall for $139 million may be paid more, and that violates the terms of the first group's settlement. 

A total of more than 100 students and parents sued the district after former Miramonte Elementary School teacher Mark Berndt was charged with 23 counts of committing lewd acts, including feeding students cookies laced with semen. Berndt is serving 25 years in prison. 

Attorney Paul Kiesel's clients were among the first group of students who settled in 2013 for $470,000 each, a total of $30 million. In a claim submitted to the district on Feb. 6, Keisel argues that settlement prohibits other students from receiving more than his clients.

The settlement for Kiesel's group states that it is the intent of the parties that any future Miramonte-related settlements pay less per plaintiff than the $470,000 figure.  In the case of the suit that was settled for $139 million, a judge is deciding how much each plaintiff will receive; it is expected that some of the students will receive more than $470,000.

Kiesel's complaint seeks the difference between what his clients were paid and the highest amount awarded to students in the second group.

The $139 million settlement was the largest of its kind in Los Angeles Unified School District history. 

If Kiesel's clients prevail, the district's overall tab for the Miramonte case could significantly increase from the $170 million in settlements awarded so far. 

The school district has yet to respond to the claim and declined to comment for this story. 

Kiesel would not discuss the claim in greater detail, but attorney Raymond Boucher, who also represented students in the initial settlement, characterized its language limiting the size of future settlements as a "fairness clause.

"We are talking about a number of young children and you want to make sure they are all treated fairly and equally," Boucher told KPCC. 

Attorney Vince William Finaldi, who represented some of the students in the group that settled for $139 million last November, argued that the earlier settlement would need to include a "most favored nation clause" to prevail in court. 

"It needs to have two elements," Finaldi said. "The first element is a statement by the settling party that 'we agree not to pay anyone else more than X amount.' It also needs a second clause which states, 'in the event we do pay someone more than X amount, then we'll pay you Y amount," Finaldi said. 

The settlement for Kiesel and Boucher's clients does not include language stipulating what would happen if a future settlement pays out more money per plaintiff.

If L.A. Unified rejects Kiesel's claim, then he could ask a mediator or a court to resolve the dispute.

This content is from Southern California Public Radio. View the original story at SCPR.org.

Mole
Apr 21, 2020; 133:jcs244988-jcs244988
STICKY WICKET

Full Text:

On August 17, 2017, scientists made history with the first direct observation of a merger between two neutron stars. It was the first cosmic event detected in both gravitational waves and the entire spectrum of light, from gamma rays to radio emissions. The impact also created a kilonova -- a turbocharged explosion that instantly forged several hundred planets’ worth of gold and platinum. The observations provided the first compelling evidence that kilonovae produce large quantities of heavy metals, a finding long predicted by theory. Astronomers suspect that all of the gold and platinum on Earth formed as a result of ancient kilonovae created during neutron star collisions. Based on data from the 2017 event, first spotted by the Laser Interferometer Gravitational-wave Observatory (LIGO), astronomers began to adjust their assumptions of how a kilonova should appear to Earth-bound observers. A team of scientists reexamined data from a gamma-ray burst spotted in August 2016 and found new evidence for a kilonova that went unnoticed during the initial observations.

Image credit: NASA/ESA/E. Troja

Full Text:

Scientists have recovered the first genetic data from an extinct bird in the Caribbean, thanks to the remarkably preserved bones of a Creighton's caracara in a flooded sinkhole on Great Abaco Island in the Bahamas. Studies of ancient DNA from tropical birds have faced two formidable obstacles. Organic material quickly degrades when exposed to heat, light and oxygen. And birds' lightweight, hollow bones break easily, accelerating the decay of the DNA within. But the dark, oxygen-free depths of a 100-foot blue hole known as Sawmill Sink provided ideal preservation conditions for the bones of Caracara creightoni, a species of large carrion-eating falcon that disappeared soon after humans arrived in the Bahamas about 1,000 years ago. Florida Museum of Natural History researcher Jessica Oswald and her colleagues extracted and sequenced genetic material from the 2,500-year-old C. creightoni femur. Because ancient DNA is often fragmented or missing, the team had modest expectations for what they would find –- maybe one or two genes. But instead, the bone yielded 98.7% of the bird's mitochondrial genome, the DNA most living things inherit from their mothers. The mitochondrial genome showed that C. creightoni is closely related to the two remaining caracara species alive today: the crested caracara and the southern caracara. The three species last shared a common ancestor between 1.2 and 0.4 million years ago. "This project enhanced our understanding of the ecological and evolutionary implications of extinction, forged strong international partnerships, and trained the next generation of researchers," says Jessica Robin, a program director in National Science Foundation's Office of International Science and Engineering, which funded the study.

Image credit: Florida Museum photo by Kristen Grace

Immigration benefits the U.S. economy overall and has little negative effect on the income and job opportunities of most native-born Americans, says a new report by a panel of the National Research Council.

Reducing one of the nations leading causes of death and injury – medical errors – will require rigorous changes throughout the health care system, including mandatory reporting requirements.

Representatives from academies and research organizations around the world sent messages of condolence and support to members, officials and staff of the U.S. National Academies in the wake of terrorist attacks on the World Trade Center and the Pentagon. The following are excerpts from some of these messages.

No single approach -- technical, legal, economic, or educational -- will be sufficient to protect children from online pornography.

Scientific evidence is insufficient to prove or disprove the theory that exposure to polio vaccine contaminated with a monkey virus between 1955 and 1963 has triggered cancer in humans, says a new report from the Institute of Medicine of the National Academies.