This weekend, in a virtual panel as reported by TrekMovie, Robert Duncan McNeill and Garrett Wang spoke about their new podcast and...

One of the most fascinating things about planet Earth is the way that life shapes the Earth and the Earth shapes life. We only have to look back to the Great Oxygenation Event (GOE) of 2.4 billion years ago to see how lifeforms have shaped the Earth. In that event, phytoplanktons called cyanobacteria pumped the …

Continue reading "New Data Show How Phytoplankton Pumps Carbon Out of the Atmosphere at an Enormous Scale"

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Pletení, to přece není práce pro chlapa, řeknete si. Ovšem ve slovenských Čičmanech (a vůbec v celé oblasti Horního Pováží) by mnozí nesouhlasili. Tady bývalo pletení ponožek z ovčí vlny výsostnou činností tamních bačů. V dnešní době je ovšem takový pletač nadmíru vzácný.

Raymond C. Rumpf, Ph.D., professor of electrical and computer engineering at The University of Texas at El Paso, was promoted to Fellow of the International Society for Optics and Photonics (SPIE), an educational nonprofit established to advance light-based science, engineering and technology.

The beauty of slow TV, says Spencer Stoner, is that it’s different things to different people – a travelogue, an immersive experience, an awesome screensaver. After the success of last year’s Go South, Stoner has spent a month at sea filming Go Further South, a 12-hour journey from Bluff to Antarctica.
Not to put too fine a point on it, but Go Further South is perfect for self-isolation.
It’s kind-of an unhappy accident. I’ve been in the final stage of editing and every day I feel like I’m sailing through the Ross Sea in Antarctica and it’s cool to think that…

Parents, kids: Fear not the silica gel pack. Sure it says DO NOT EAT and THROW AWAY. But you should only follow one of those rules.    Instead, save the packs and use them a whole lot of ways: Place them on the car dashboard by the windshield to keep it from fogging up.   […]

1.8 million people in the United States drive heavy trucks for a living and are at risk of losing their jobs when trucks become autonomous. That number is from the BLS category heavy and tractor-trailer trucking with 1.8 million employees. A separate category Delivery Truck Drivers and Driver/Sales Workers has 1.3 million workers. The heavy duty truckers are more at risk than the local delivery drivers because it is easier to automate long haul driving on interstates than to automate driving on more complex (cross traffic, pedestrians, parked cars, etc) local roads. Plus, delivery drivers have to run up to houses and businesses to make most deliveries. Building robots to do that work will take longer. Railroad operation is easier...

Uber also made a deal with Volvo to cooperate on self-driving cars. Self-driving cars are an existential threat to Uber if Uber doesn't develop them first. Suppose Ford makes self-driving cars viable a few years before does and rolls them out in many cities. Uber gets wiped out by Ford's ability to charge less for a ride. Uber's big competitive advantage from a large set of recruited drivers could vanish as fast as sufficiently safe autonomous vehicles can get manufactured. Sufficiently safe: that's the challenge. But autonomous vehicle makers who limit themselves to some urban markets can lower the bar for their initial roll-out by just excluding any streets and corners that are too tricky to handle. They'll lose some...

Contes de fées aux enfants - Dodo le mouton et le landau mystérieux.

Familial dysautonomia (FD) is the most prevalent form of hereditary sensory and autonomic neuropathy (HSAN). In FD, a germline mutation in the Elp1 gene leads to Elp1 protein decrease that causes sympathetic neuron death and sympathetic nervous system dysfunction (dysautonomia). Elp1 is best known as a scaffolding protein within the nuclear hetero-hexameric transcriptional Elongator protein complex, but how it functions in sympathetic neuron survival is very poorly understood. Here, we identified a cytoplasmic function for Elp1 in sympathetic neurons that was essential for retrograde nerve growth factor (NGF) signaling and neuron target tissue innervation and survival. Elp1 was found to bind to internalized TrkA receptors in an NGF-dependent manner, where it was essential for maintaining TrkA receptor phosphorylation (activation) by regulating PTPN6 (Shp1) phosphatase activity within the signaling complex. In the absence of Elp1, Shp1 was hyperactivated, leading to premature TrkA receptor dephosphorylation, which resulted in retrograde signaling failure and neuron death. Inhibiting Shp1 phosphatase activity in the absence of Elp1 rescued NGF-dependent retrograde signaling, and in an animal model of FD it rescued abnormal sympathetic target tissue innervation. These results suggest that regulation of retrograde NGF signaling in sympathetic neurons by Elp1 may explain sympathetic neuron loss and physiologic dysautonomia in patients with FD.