Despite its current dry and cold state, evidence suggests ancient Mars had significant amounts of liquid water in the form of ...

More specifically, experts say Mars once had a warm, wet climate, and their belief is based on striking geological features ...

Visit ancient Mars—a surprisingly temperate planet where snow or rain falls from the sky, and rivers rush down valleys to ...

Visit ancient Mars -- a surprisingly temperate planet where snow or rain falls from the sky, and rivers rush down valleys to feed hundreds of lakes. A new study from geologists at the University ...