News footage these days sometimes shows wild horses crowding dry rangelands in the American West or deer wandering through ...

In Lake Malawi, hundreds of species of cichlid fish have evolved with astonishing speed, offering scientists a rare opportunity to study how biodiversity arises.

The peppered moth is an iconic example of Charles Darwin’s theory of evolution by natural selection. For centuries peppered moths (Biston betularia) were common in the forests around Manchester, ...

Some species follow a reproductive strategy where mating is followed by rapid decline or death. In animals like octopuses, hormonal changes trigger a shutdown of bodily functions after reproduction.