市场需求预测_Five images that made March a great month for scienceFive images that made March a great month for science From oozing mummies to scavenging polar bears, March was a great month for science. Check out the five top images that defined the month’s science news.Climate change turns mummies into black ooze Vivien Standen Mummies in Chile and Peru have survived intact for more than 7000 years. Now, however, increasing humidity in Chile, possibly caused by global climate change, has started to turn some mummies into black ooze (pictured). To stop the oozing, the mummies will be stored in an environment with controlled humidity.A live look at the AIDS virus Philip Santangelo Researchers have used a new technique to reveal for the first time a real-time map of an AIDS virus replicating in the entire body of a living animal. This image shows how the AIDS pathogen (yellow) declines in an infected rhesus macaque after receiving antiretroviral drugs. The research could be especially helpful in better understanding what happens during the first weeks after getting infected with the AIDS virus.Fossil pushes back human origins 400,000 years Kaye Reed Two years ago, a graduate student searching for fossils at a desolate site in Ethiopia made an exciting discovery: He found a 2.8-million-year-old jawbone of a hominin in the sand. The partial lower jaw is the oldest known member of the genus Homo and pushes back our origins 400,000 years.NASA opts for boulder-snatch concept in its asteroid redirect mission NASA Officials in charge of NASA’s Asteroid Redirect Mission announced that they will snatch a small boulder off an asteroid, as illustrated above, rather than bag up an entire asteroid. The goal of the $1.25 billion mission is to test an idea for protecting Earth from a potentially catastrophic asteroid impact.Polar bears turn to seabirds for sustenance © Jouke Prop With Arctic sea ice melting earlier and earlier, polar bears are being forced to change their diets, scouring dry land for seabird eggs rather than enjoying their typical staple: seals. The disappearing sea ice is bad news for both bears and seabirds, as hungry bears are raiding nests, and the increasing predation on seabirds will likely diminish their numbers.