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A giant killer hornet war is waged between two colonies, and the resources, territories, and survival of a new generation are at stake. Watch the battle unfold as these huge hornets risk their lives for their kingdoms.

Two Giant Killer Hornet Colonies Battle to the Death (3:25)

Coconut octopuses are among the most intelligent invertebrates around: They use tools, carry their shelters around for when they need them, and, fittingly, adopt an underwater walking motion that's very similar to humans.

A Coconut Octopus Uses Tools to Snatch a Crab (2:34)

One highly influential ancient Middle Eastern civilization established some of the essential systems we still use today. Think you know which it is?

Who Decided to Put 60 Seconds in a Minute? (2:33)

Eric Green, director of the National Human Genome Research Institute, explains how genomics are revolutionizing medicine at Smithsonian's "The Future is Here" event

The Human Genome: Unlocking Life's Code (15:37)