Heat waves are pushing temperatures up this summer and breaking records across the world. It’s affecting people, crops and crickets. The cold-blooded insects chirp faster as temperatures rise.

The subject of animal personality is under intense study; the idea that behavioral phenotypes between individuals can differ, but that of a single individual, i.e., its personality, is consistent over ...

Crickets chirp faster when it’s hotter outside, according to an old scientific observation. As parts of the world experience record-breaking heat, they’ll be especially busy this summer. A chorus of ...