Also: testing the efficacy of WWI “dazzle” camouflage; how the male blue-lined octopus survives deadly mating ritual.

Hand-carved arrowheads and jagged spears made of obsidian, a sharp rock formed by volcanic magma, are remnants of vast ...

Some places make you relax and also rethink your entire life. You step inside, breathe it in, and suddenly, you’re mentally ...