The first warm-blooded animals appeared abruptly 233 million years ago, according to clues hidden deep inside their ears. Before now, scientists estimated that warm-bloodedness, or endothermy, ...

How could the tiny parts of the ear adapt independently to the diverse functional and environmental regimes encountered in mammals? A group of researchers proposed a new explanation for this puzzle.

Echolocating animals, including most species of bat and echolocators such as dolphins, obtain information about their surroundings from the differences between outgoing signals that they emit and the ...