The technology for creating new tissues from stem cells has taken a giant leap forward. Three tablespoons of blood are all that is needed to grow a brand new blood vessel in just seven days. This is shown in a new study from The University of Gothenburg and Sahlgrenska University Hospital in Sweden, published in EBioMedicine. —> Read More Here
Standing on the ground, we’re used to seeing the bolts and flashes of lightning during epic thunderstorms. But how would it look like from space? These three Vine videos from orbiting NASA astronaut Reid Wiseman provide a glimpse.
As you can see in these videos he uploaded to his Twitter account a few days ago, flashes and pools of light appear in this lightning storm over Kansas that he spotted from the International Space Station. Check out more below the jump. (…)
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Drought is taking its toll on the water system that quenches the thirst of Brazil’s largest city, Sao Paulo, to such a degree that it is visible to orbiting satellites.
Sao Paulo is facing water rationing as the worst drought to hit the region in decades reduces reservoirs to muddy waters surrounded by cracked earth.
The Cantareira Reservoir System provides about half of the overall water to the city’s 20 million residents. But a series of months with below average rainfall have seen water levels plummet. NASA Landsat 8 images published by the NASA Earth Observatory show the precipitous decline of the Jaguari Reservoir, one of a handful that make up the system, from mid-August last year to early August this year.
Since the images were acquired, the water levels have only dropped further. As of Thursday, Sabesp, Sao Paulo’s water utility, reported that the Cantareira system was operating at only 3 percent of its capacity. That’s essentially considered “dead water,” which Sabesp has only been able to tap after building an extra 2 miles of pipeline to the reservoir’s center.
During the height of last year’s —> Read More Here
A view of Comet 67P/Churyumov-Gerasimenko on Sept. 26, 2014 from the orbiting Rosetta spacecraft. Credit: ESA/Rosetta/NAVCAM
While you can’t smell in space — there is no medium to carry the molecules, the same reason you can’t hear things — you can certainly detect what molecules are emanating from comets and other solar system bodies. A new analysis of Comet 67P/Churyumov-Gerasimenko by the orbiting Rosetta spacecraft thus found a rather pungent chemistry combination.
The spacecraft detected hydrogen sulphide (the smell of rotten eggs), ammonia and formaldehyde with traces of hydrogen cyanide and methanol. But compared to the amounts of water and carbon monixide 67P has, these molecule concentrations are quite miniscule.
Read the rest of Stinky! Rosetta’s Comet Smells Like Rotten Eggs And Ammonia (125 words)
Well-Lit, based in Huddersfield, West Yorkshire, claims it has solved the shortcomings of LED lightbulbs, which have so far been unable to match the brightness of incandescent bulbs. —> Read More Here
Paleontologist Jack Horner explains what dinosaurs tell us about our own origins and what we can learn by attempting to revive a piece of the past.
Geneticist Spencer Wells tells the story of early humans, and our eventual migration from Africa.
Louise Leakey describes her family’s long search for early human remains in Africa, and how unlocking that mystery is the key to understanding our past and our future.
David Christian explains the history of the universe from the big bang, and how humans occupy little more than a millisecond on that cosmic timeline.
Geneticist Spencer Wells describes how he uses DNA samples to trace our individual origins going back 2,000 generations.