Identified as an Arctic fox, the animal is believed to have been kept in captivity far from its native habitat in the tundra. Now, it's receiving care from wildlife officials

New research traces the genetic underpinnings of the enzyme amylase, which helps humans digest starches and sugars

Opening next spring, the new venue will have exhibits and a barbecue bean-themed ball pit play area for kids

Each of the 11 dolphins sampled exhaled at least one suspected particle of microplastic, which researchers say “highlights how extensive environmental microplastic pollution is”

Winners of the Nikon Small World Photomicrography Competition captured insects, cancer cells, cat claws and more

Paramotorists spotted the dog while soaring above one of Giza's pyramids last week

Owner George Frandsen has some 8,000 coprolites from dinosaurs, sharks and other creatures

Featuring more than 100 original artifacts, a new immersive exhibition in New York City will explore the young Jewish diarist's life and legacy

Scientists in France solved the evolutionary mystery of this prehistoric monster, which resembles both the centipedes and millipedes of today

Created in London in the 1960s, the tracks are heading to auction as part of a larger collection of memorabilia connected to the famous American guitarist

Called M136279841, the value belongs to a rare class of prime numbers called Mersenne primes and was found using a supercomputer system spread across 17 countries

Government corruption, loved ones becoming ill or dying, cyberterrorism and nuclear weapons topped the list of Chapman University's annual survey

The banana duct-taped to a wall was created to be a "reflection on what we value." An upcoming auction may deliver an answer

By analyzing an old lidar survey, researchers found evidence of more than 6,500 ancient structures in a previously unexplored area of Campeche

The owners inherited the valuable coin from their brother, who kept it locked in a bank vault for decades. He purchased it with his mother in 1978 to provide financial security for the family farm

Found in a rock in Argentina, the six-inch-long tadpole sheds light on the history of frog metamorphosis

The critter found in New York represents a new, extinct species of arthropod that could shed light on the evolution of today's insects, crustaceans and spiders

Unlike other birds, which get pigments from their diets, parrots produce their own—but scientists never fully understood the underlying mechanisms, until now

A "staggering array" of markings have been hiding in plain sight carved into the walls of Gainsborough Old Hall, a 500-year-old home in Lincolnshire, England

The pachyderm, named Kamala, was suffering from osteoarthritis when zoo staff chose to euthanize her

The Manhattan district attorney's office has obtained an arrest warrant for Edoardo Almagià, who has been accused of working with looters and dealing stolen artifacts for years

The farthest spacecraft in the universe went momentarily rogue, but scientists breathed a sigh of relief when it reconnected at an unexpected radio frequency

In a rare technique among mammals, the bats burn proteins from blood, rather than carbs or fat, to power their pursuits of prey, according to a new study

The 3,800-year-old site near the city of Luxor holds the remains of 11 individuals, who may have been members of the same family. Researchers think the tomb was used for several generations

The 4,500-year-old pyramids of Giza are the backdrop for "Forever Is Now," which features sculptures, installations and immersive artworks that explore the relationship between the past and present

The brick-built botanicals celebrate the UK’s 2017 City of Culture

An investigation by David D. Kirkpatrick of the New York Times revealed the buyer's identity

It's not clear how the juvenile male ended up so far north, but experts suggest he was motivated by his appetite

The Cuban-American actor and producer has stars on Hollywood’s Walk of Fame, but this new honor pays tribute to his start as a musician in South Florida

The team traveled from New Zealand to Tonga along a humpback highway to collect environmental DNA and raise awareness of the plight of the marine mammals

Once one of the world’s most dangerous border crossings, Berlin's symbol of death and division has been turned into a tangible way to experience history

See the finalists of our 2014 photo contest and vote for the Readers' Choice winner

The 50th Christmas Craft Fair gathered over a hundred vendors and thousands of customers in Torbay over the weekend. One family business was inspired by the early years of the fair and a passion to keep traditional crafts in style.

Independent Elizabeth Smith-McCrossin is back on the campaign trail in Cumberland North, but opponents say the riding would be better represented by an MLA from an official party. 

Some Nova Scotia municipal leaders are defending a funding stream the federal Conservatives say they will cut if elected, calling it a "game changer."

Facing soaring food prices and an escalating housing crisis, Quebec student associations are urgently calling on the provincial government to fund internships required for post-secondary training.

The union representing dockworkers in Montreal says Canada's labour minister forcing its members back to work at ports in Montreal and Quebec City marks a "dark day for workers' rights."

To understand the circuitry of the brain, it is often advantageous to visualize the processes of a single neuron or population of neurons. Identifying sites where a neuron, or neurons, originates and where it projects can allow a researcher to begin to map the circuitry underlying various processes, including sensory-guided behaviors. Furthermore, neural tracing allows one to map locations where processes terminate onto regions of the brain that may have known functions and sometimes to identify candidate upstream or downstream connections, based on proximity. Many methods of neural tracing are available; here, we focus on loading fluorescent dyes into a neuron (fluorescent dye filling). Different options for dyes exist to label neurites. Among the most versatile and easy to use are dextran amine–conjugated dyes. They fill neurons bidirectionally, not discriminating between anterograde or retrograde loading direction. Dye filling must be done in unfixed tissue, as the dye needs to move through the neurons; however, dextran amine conjugates are aldehyde-fixable and once cells have been fully loaded with dye the tissue can be fixed and subjected to immunostaining. Coupling neural tracing with immunofluorescence is a useful way to determine specific brain or ventral nerve cord (VNC) regions where a neuron projects. This protocol describes methods for loading dextran amine conjugated dyes into a sensory tissue in the mosquito to visualize sites of sensory neuron innervation in the central nervous system, as well as efferent projections to these structures. This protocol is described for Aedes aegypti, for which it was optimized, but it also works across a variety of insects.

The technique of visualizing axon pathways in the embryonic ventral nerve cord using antibody labeling has been fundamental to our understanding of the genetic and developmental mechanisms underlying nervous system wiring in Drosophila. High-resolution microscopic examination of the ventral nerve cord remains an essential component of many experiments in Drosophila developmental neuroscience. Although it is possible to examine the ventral nerve cord in intact whole-mount embryos, to collect the highest-quality images it is often useful to isolate the nervous system away from the other embryonic tissues through embryo dissection. This protocol describes methods for dissecting ventral nerve cords from Drosophila embryos that have been fixed and stained via immunofluorescence or horseradish peroxidase (HRP) immunohistochemistry. The process of making fine dissection needles for this purpose from electrolytically sharpened tungsten wire is also described. Dissected and mounted ventral nerve cords can be examined and imaged using a variety of microscopy techniques including differential interference contrast (DIC) optics, epifluorescence, or confocal microscopy.

The insect eggshell is a multifunctional structure with several important roles, including generating an entry point for sperm via the micropyle before oviposition, serving as an oviposition substrate attachment surface, and functioning as a protective layer during embryo development. Eggshell proteins play major roles in eggshell tanning and hardening following oviposition and provide molecular cues that define dorsal–ventral axis formation. Precise eggshell formation during ovarian follicle maturation is critical for normal embryo development and the synthesis of a defective eggshell often gives rise to inviable embryos. Therefore, simple and accurate methods for identifying eggshell proteins will facilitate our understanding of the molecular pathways regulating eggshell formation and the mechanisms underlying normal embryo development. This protocol describes how to isolate and enrich eggshells from mature oocytes of Aedes aegypti mosquitoes and how to extract their eggshell proteins for liquid chromatography with tandem mass spectrometry (LC–MS/MS) proteomic analysis. Although this methodology was developed for studying mosquito eggshells, it may be applicable to eggs from a variety of insects. Mosquitoes are ideal model organisms for this study as their ovarian follicle development and eggshell formation are meticulously regulated by blood feeding and their follicles develop synchronously throughout oogenesis in a time-dependent manner.

A Two-Day Festival in the historic Arts & Industries Building brings community, artists and scholars together for a “Culture Lab”

By raising her son to be curious about the natural world, this mother helped shape the trajectory of the National Museum of Natural History

Water quality guidelines for mercury are 0.02 micrograms per litre of water. Several results show that levels at four sites are far above that threshold. During the second week of October, one value close to the mine was more than seven times the acceptable level.

Paraglider Ben Lewis remembers spinning around wildly as he got pulled up higher and higher into the violent storm. That was when he realized, about 6,700 metres up in the sky and still rising, that he was not likely to see his family again.

A group of volunteers have been providing emergency services to West Dawson residents during the periods of freeze up and break up, when there is no reliable access across the Yukon River to town.

In a new biopic starring Kate Winslet, Miller's many lives—as an artist, model, muse, cook and war correspondent—need little embellishment

Fifty years ago, on October 5, 1974, David Kunst completed the first verified circumnavigation of the globe on foot. Along the way, he met Princess Grace of Monaco, raised money for UNICEF and lost a brother to bandits

With flinty perseverance and a golden touch, Belinda Mulrooney earned an unlikely fortune in the frozen north and reshaped the Canadian frontier

Advocates say pay equity laws, while needed, often do not help the most vulnerable workers.

Families of Norton Elementary School won’t be seeing their kids return anytime soon. Repairs are going to take longer than expected and students are expected to be back in the school by the start of the next school year.