The growing unmanned aircraft industry has developed a device that looks like a hummingbird known as nano-hummingbird.
biology
Deadly Fungal Disease Threatens Frogs To Global Extinction?
In Dusy Basin, in California’s Sequoia and Kings Canyon National Parks, Vance Vredenburg, a professor of biology at San Francisco State University, is conducting an experiment he hopes will help preserve what remains of the once abundant frogs.