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Pluto and Beyond
The New Horizons spacecraft zooms toward an object 4 billion miles from Earth.
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Ice Age Footprints Preview
Ancient footprints provide new evidence of humans and extinct giant beasts of the Ice Age.
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Dinosaur Apocalypse: The Last Day
Scientists use new fossils to reconstruct the day the dinosaurs died.
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Dinosaur Apocalypse: The New Evidence Preview
Striking new fossils paint a picture of life right before the asteroid impact.