A total solar eclipse will be visible in North America today. Animals may start acting weirdly as the moon blocks out the sun. Scientists aren't completely sure how eclipses affect animal behavior.

Thanks to their easily fossilized exoskeleton, trilobites largely dominate the fossil record of early complex animal life. However, trilobite appendages and the anatomy of the underside of their body ...

Breakthroughs, discoveries, and DIY tips sent every weekday. Terms of Service and Privacy Policy. Jet lag isn’t just an unpleasant side effect of travel for humans ...