Scientists must journey to remote islands in the middle of the Bering Sea, braving uncertain conditions, to reach the ...
When a disease-causing pathogen such as a flu virus is already adapted to infect a particular animal species, it may eventually evolve the ability to infect a new species, such as humans, through a ...
Allen’s Hummingbird Identification The male Allen’s hummingbird has warm rusty-orange flanks, breast band, face, neck, and tail, as well as a green back and crown. They often have a rusty-orange rump ...