NASA and the French space agency CNES's SWOT satellite provides researchers with the tools to create the most accurate ocean maps yet.

This puts Earth in a so-called "Goldilocks zone," where the temperature is just right for liquid water to exist on the surface. Our planet's atmosphere is mostly made of nitrogen. The next biggest ...

Weathering and erosion slowly chisel, polish, and buff Earth's rock into ever ... of tons of sediment into the oceans. Without the erosive forces of water, wind, and ice, rock debris would simply ...