A glass of water is all a fish detective needs to identify thousands of fish.
Birds can use this skill to fly in amazingly precise patterns that blanket the sky.
California's marijuana industry may harm the rivers where Chinook and other salmon swim.
The extinct 10-foot-tall, 1,200 pound ape, Gigantopithecus,
may have died out after turning to fruit to replace dwindling bamboo.
A very early ancestor to humans originated before dinosaurs went extinct.
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