Until now, blood cell production was ascribed solely to bone marrow, but studies on mice have found that the majority of the body’s platelets are produced in the lungs, as is a backup reservoir of blood stem cells that can step in when those in the bone marrow run dry.
Researchers have found another reason to try to keep your Mac attacks at bay. Grease-resistant wrappers treated with the same chemicals used in stain-resistant products like carpets were found in significant numbers at a variety of fast-food restaurants. And they can leach into your food.
Germany's DLR has constructed the world's largest artificial Sun. The three-storey "Synlight" electrically-powered sun lamp will be used for various research projects, including developing processes for producing hydrogen fuel using sunlight.
The Indian Space Research Organisation (ISRO) has set a new record for the number of satellites delivered into orbit from a single rocket. The PSLV C37/Cartosat-2 Series Mission delivered 104 satellites into orbit, beating the previous record of 37 satellites set by Russia in 2014.
No less than 500 new species of cichlids, brightly coloured perch-like fish, evolved in Lake Victoria (East Africa) over the past 15,000 years – a record in the animal and plant world. This evolutionary puzzle has now been solved by scientists from Eawag and Bern University.
These transient features are so named because they last about 20 milliseconds.
Scientists don't know much about the mysterious, powerful electric discharges that sometimes occur in the upper levels of the atmosphere in conjunction with thunderstorms. The first photograph of the phenomenon—which can occur as high as about 90km above the surface of the Earth and are known variously as sprites, pixies, elves, or jets—was only taken from Earth in 1989.
Fortunately for scientists interested in these storms, the International Space Station offers an excellent vantage point at an altitude of about 400km. So Danish researchers devised a "Thor experiment"—named after the hammer-wielding Norse god—to study the phenomenon. As part of the experiment, an astronaut on board the station would image thunderstorms under certain conditions, and these observations would be correlated with data collected by satellites and ground-based radar and lightning detection systems.
It may sound easy to catch a few quick snaps of electrical storms, but given the station's movement at 28,000km/hour and ephemeral nature of these events, it's actually quite difficult. Sprites and other features got their other-worldly names precisely because they are so short-lived, lasting on the order of 20 milliseconds.
When Danish astronaut Andreas Mogensen spent 10 days on the station in September 2015 as part of an ESA-Roscosmos contract that designated him a visiting crew member, one of his primary tasks was to complete the Thor experiment. Perched in the station's cupola, with a Nikon D4 set at 6400 ISO and recording 24 frames per second, Mogensen readied himself to capture images at locations where forecasters predicted thunderstorm activity would occur below.
Here’s how things normally work. When you leave your house you make sure that you’ve locked your front door behind you. You ensure that you’ve shut your windows. Maybe, if you’re going to be away for a while, you might even set your burglar alarm. But the rise of the Internet of Things has changed …
“Mini-brains,” models created from 3D cultures of neural cells, could help reduce our reliance on animal testing. Now researchers have discovered the neural cells are growing their own blood vessels too, opening the door for better studies of stroke, Alzheimer’s and concussion.
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