Early Mars Climate was Complex, with Streams Flowing Intermittently for Millions of Years

Water may have flowed intermittently in Martian valleys for hundreds of millions of years. Using impact craters as a dating tool, researchers determined maximum timescales for formation of Martian valley networks shaped by running water - which has big implications for early Mars' habitability.

The Income Gap Jeopardizing Retirement for Millions

These 12 'living fossils' have barely evolved for millions of years