New findings shed light on how humans' ancestors interbred, but the Denisovans remain quite mysterious.
Humans and mosquitoes share a surprising amount of genes and have similar hunger controls.
Heatwaves have led to widespread deaths of animals like big-eyed tarsiers and flying foxes. Is there hope for species like this as temperatures rise?
Evolutionary biology offers theories as to why some mammals engage in monogamy. And no, it's not because they're in love. (Sorry.)
Heliconian butterflies choose mates with similar wing patterns. Their genes make them do it.
The wild ancestors of coffee and other vital crops are at risk, leaving much of the world's food supply vulnerable to catastrophe.
City gardens and hotel rooftops can serve as refuges—and food corridors—for the troubled species.
The endangered eastern lowland gorilla populations are now so small that the species is facing a new threat: loss of genetic diversity.
Why slime molds can solve math problems that you can't.
When viewing boats come too close, seals and their pups stampede into the water. Scientists say it exhausts the animals.