This story was originally published on May 7, 2021. Animals Scale Tooth Whale Get the best tech, science, and culture news in your inbox daily. News from the future, delivered to your present.

In most parts of the natural world, eyesight is key. Animals use it to find food, escape danger, and move around. But in some ...

This lesson is about some of the things animals do to keep what goes on inside their bodies perfectly balanced, and few things are more important to keep balanced than body temperature.