You're a complex organism. You socialize with family and friends, you solve puzzles and make choices. Humans may be some of the most cerebral animals on the planet, but we know we're not alone in having this sort of behavioral complexity. Crows use tools. Primates create incredible social structures. Whales congregate.
A new study released earlier this week in the journal Nature Nanotechnology may be a major step towards making desalinated water—water in which salt is removed to make it safe for drinking—a viable option for more of the world. Researchers from the University of Manchester modified graphene oxide membranes, a type of selectively permeable membrane that allows some molecules to pass while keeping others behind, to let water through while trapping salt ions. It's essentially a molecular sieve.
Airplane passengers are in for an increasingly bumpy ride according to a study released today in the journal Advances in Atmospheric Sciences. Climate change is altering the jet stream, making severe turbulence more likely. The study builds on earlier work which found that climate change would lead to bumpier airplane rides. What makes the new research unique is that it quantifies how much different kinds of turbulence will increase—59 percent in the case of light turbulence, a 94 percent increase in moderate turbulence, and 149 percent increase in severe turbulence.
Forensic scientists are trying to understand what tears and distortions in the fabric around a stab wound can say about the knife type, angle of attack, and stabbing technique that caused the wound. But the patterns have been difficult to work out, partly because researchers have had to do most of their laboratory experiments by hand, manually stabbing different fabric swatches. But inconsistencies and human error are unavoidable. So a team of forensic scientists and engineers invented a stabbing machine to help standardize this type of research.
On March 30, the first stage of a Falcon 9 rocket sent its second payload into space, after having launched and landed in April 2016. This achievement is an important milestone in the company's road to creating a reusable launch system—and a feat that's 15 years in the making. The launch and subsequent landing on a drone ship proves, as SpaceX CEO Elon Musk noted, "you can fly and re-fly an orbit-class booster."
About four billion years ago, Mars was warm. Water flowed in lakes and rivers under a nice thick blanket of atmosphere. But then something cataclysmic happened. Mars' insulating atmosphere all but disappeared. Exposed to the harsh elements of space, the red planet became the dry, frozen wasteland that it is today.
Air Pollution kills. A study released yesterday in the journal Nature found that in 2007, air pollution lead to the premature deaths of 3.45 million people worldwide—a number equivalent to the population of the state of Connecticut. And to add insult to injury, air pollution doesn't respect borders.