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NOVA
Reef Rescue Preview
If oceans continue to warm at the current pace, coral reefs could be wiped out by the end of the century. But scientists from around the globe are rushing to help corals adapt to a changing climate through assisted evolution.
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An American combat hospital mobilized in Iraq faces a daily drama of wartime treatment.
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Will experimental particle physics confirm the wild predictions of string theory?
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Do miniscule vibrating strands of energy hold the key to a unified theory of physics?
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Combining the laws of the universe in one theory that explains it all is the Holy Grail
