Explore 25 things that exist but shouldn't be possible, from immortal jellyfish to unkillable tardigrades. Challenge your ...

The colorful waves are a sign of a natural phenomenon that can harm humans and pets, experts say.

Not all earthquake faults behave the same. Some stick and snap, causing earthquakes. Others move slowly over time.

Early Monday morning, the National Weather Service office in Miami lit up the marine wires with a special warning that turned ...