Explore how geography, in particular the sea, shaped ancient Greece's agricultural practices, approach to trade and warfare, and colonial expansion.

A new map shows hidden Martian rivers stretching thousands of miles, offering fresh evidence of a warm, wet ancient Mars.

Rivers are exhaling ancient carbon — and climate math just changed. ScienceDaily. Retrieved July 12, 2025 from www.sciencedaily.com / releases / 2025 / 06 / 250612092543.htm.

The Perseverance rover has captured new images that appear to show evidence of a fast-flowing river that once fed into Jezero Crater, the site of an ancient Martian lake. CNN values your feedback 1.

Nature - A global analysis reveals that most carbon dioxide emitted by rivers derives not from modern plant material, as was thought, but from ancient, buried carbon.