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.
The Callery pear was meant to help prevent fire blight from destroying the commercial pear industry. Then it became invasive.
Victorian London became obsessed with Ward's cases, which protected plants from the city's toxic pollution -- and piqued peoples' imaginations.
Ancient Egyptians' love of cats developed from an appreciation of their rodent-catching skills to revering them as sacred creatures.
Why the Loch Ness Monster has a scientific binomial.