For surfers, “green waves” are where it’s at. The place on a breaking wave where the actual surfing gets done, as opposed to ...

How big is the anglerfish? Why did it come to the surface? A scientist weighs in about what happened to the anglerfish.

Cleaner, more pure water backscatters light in the blue range, which makes it look blue. One famous example is Crater Lake in Oregon, which lies in a volcanic crater and is fed by rain and snow, ...