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Alien Planets Revealed Preview
Are we alone—and if not, what might the inhabitants of far-flung worlds look like?
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Animal Minds: Birds Preview
Birds that craft tools and pick locks are rewriting the rules of animal intelligence.
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Oklahoma's Deadliest Tornadoes Preview
Hear stories from survivors of Moore’s tornado and meet scientists who stalk these storms.
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Doomsday Volcanoes - Preview
Could the explosion of Iceland's ticking time bombs cause cold and famine worldwide?