Since October, northeastern Brazil has been devastated by a wave of microcephaly, a condition where babies are born with abnormally small heads and damaged brains. At this moment, all signs point to the mosquito-borne Zika, a little-studied virus normally associated only with rashes, fever, and other mild symptoms. In the months since Brazil sounded the alarm, Zika cases have been popped up in a dozen other countries, and health authorities predict the virus will spread across the Americas. Infectious disease specialist Michael Osterolm explains what’s known about Zika, and what we can expect as this outbreak unfolds.
We take for granted that drops which impact a solid surface will splash, but, in fact, drops only splash when the surrounding air pressure is high enough. When the air pressure is low enough, drops simply impact and spread, regardless of the fluid, drop height, or surface roughness. Why this is and what role the surrounding air plays remains unclear. Here researchers visualize the air flow around a droplet impact. In (a) we see the approaching drop and the air it pulls with it. Upon impact in (b) and © the drop spreads and flattens while a crown of air rises in its wake. The drop’s spread initiates a vortex ring that is pinned to the drop’s edge. In later times (d)-(f) the vortex ring detaches from the drop and rolls up. (Photo credit: I. Bischofberger et al.)
Day 2 of our mushroom lab: running our sample through a DEAE-Sepharose column
Superfluids, a special type of fluid located below the lambda point near absolute zero, exhibit some mind-bending properties like zero viscosity and zero entropy. They are, in essence, a macroscopic manifestation of quantum mechanics. Here their thermomechanical, or fountain, effect is explained. This bizarre state of matter isn’t only found in laboratories, though. Scientists now think that superfluids may exist at the heart of neutron stars.
Sorry, Spidey. Any real-life Spider-Man would have to have size 114 shoes (sticky ones) or have 40% of his body covered in sticky pads in order to climb walls.
The cellular structure of wood as seen through a Victorian microscope. (via)
MIT discovers a new state of matter, a new kind of magnetism
“Really, though, the most exciting thing about quantum spin liquids is that they’re completely new, and thus we ultimately have no idea how they might eventually affect our world. “We have to get a more comprehensive understanding of the big picture,” Lee says. “There is no theory that describes everything that we’re seeing.””
That one time my roommate couldn't watch Shane's Asagao Academy stream so I live-texted it to her instead (part 2).
@didyouknowshaning‘s asagao stream part 2/part 1
Thanks to @secretagentpeptidebond for the documentation!