Extras

Video thumbnail: NOVA Rare stellar explosion will ignite a "new star"

Rare stellar explosion will ignite a "new star"

Video thumbnail: NOVA The discovery of worlds beyond our solar system

The discovery of worlds beyond our solar system

Video thumbnail: NOVA The force that makes up more than half of the universe

The force that makes up more than half of the universe

Video thumbnail: NOVA How parrots swing like monkeys

How parrots swing like monkeys

Video thumbnail: NOVA Great American Eclipse Preview

Great American Eclipse Preview

Video thumbnail: NOVA A.I. Revolution Preview

A.I. Revolution Preview

Video thumbnail: NOVA When Camels Roamed the Arctic

When Camels Roamed the Arctic

Video thumbnail: NOVA Hunt for the Oldest DNA Preview

Hunt for the Oldest DNA Preview

Video thumbnail: NOVA Why is the Eiffel Tower Shaped Like That?

Why is the Eiffel Tower Shaped Like That?

Video thumbnail: NOVA Building the Eiffel Tower Preview

Building the Eiffel Tower Preview

Video thumbnail: NOVA 5 things to know about the Eiffel Tower

5 things to know about the Eiffel Tower

Video thumbnail: NOVA What really led to the collapse of Easter Island?

What really led to the collapse of Easter Island?

Video thumbnail: NOVA How Ancient Easter Island statues “walked”

How Ancient Easter Island statues “walked”

Video thumbnail: NOVA Easter Island Origins Preview

Easter Island Origins Preview

Video thumbnail: NOVA When Whales Could Walk Preview

When Whales Could Walk Preview

Video thumbnail: NOVA The whale that could walk

The whale that could walk

Video thumbnail: NOVA Ancient whale fossils found in the desert

Ancient whale fossils found in the desert

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