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Researchers Observe Climate Change, First-Hand

As the climate changes, scientists are documenting measurable shifts in the natural world — from a tremendous loss in Arctic sea ice and an increase in extreme weather like drought, floods and heatwaves, to the migration of plants and animals to new latitudes.
NPR

We Evolved To Eat Meat, But How Much Is Too Much?

Scientists agree we evolved to eat meat, but some of us may be pushing the limits of consumption. Paleo diet enthusiasts believe meals should be more like early man's, but modern doctors disagree.
NPR

The Time Traveler's Cookbook: Meat-Lover's Edition

Want to eat like your distant ancestors? Try the gazelle tartare or the luau mammoth! You'll discover these recipes and more in our Time Traveler's Cookbook.
NPR

Rio+20 Summit Sustains Little More Than Sentiment

The international conference dedicated to alleviating poverty and leaving the planet livable was the biggest U.N. conference ever, but it may also have been one of the biggest duds. As the organizer put it, "equally unhappy means equally happy."
NPR

Will China Blast Past America In Space?

China's Shenzhou 9 spacecraft docked successfully with the orbiting Tiangong 1 test module this week, ticking off another accomplishment for the country's manned spaceflight program. Jonathan McDowell and Joan Johnson-Freese discuss the future of China's space program, and whether a new space race is heating up.
NPR

Voyager 1 Bids Farewell to the Solar System

The Voyager 1 spacecraft will soon have a new territory to explore--interstellar space. Voyager chief scientist Ed Stone discusses whether the spacecraft will have a bumpy exit from the solar system, and the chances Voyager's golden record may someday be intercepted by an advanced space-faring civilization.

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