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More CO2 = More Pollen

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More CO2 = More Pollen

Climate change has increased pollen counts and the length of the pollen season, trends that are expected to continue through mid-century.

Winter Olympics in a Warming World

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Winter Olympics in a Warming World

If global warming continues unabated, only 6 of the 19 previous host cities could host the Winter Games again by the 2080s.

Pollen Searches are on the Rise

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Pollen Searches are on the Rise

Online searches for the word"pollen" have gone through the roof this spring, and if you know anyone with seasonal allergies (and who doesn't?) this isn't surprising.

Interactive: Small Modular Reactors - Safe and Cheaper?

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Interactive: Small Modular Reactors - Safe and Cheaper?

For decades, some nuclear engineers have been pushing an alternate technology that they claim could address all the concerns of conventional nuclear reactors. Called Small Modular Reactors (SMRs), these plants,would be inherently cheaper to build and safer to operate than conventional plants.

The Age of Man: A New Geologic Epoch

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The Age of Man: A New Geologic Epoch

Recent human activity is having such a significant environmental impact on the planet that we may be entering a new geologic epoch, known as the Anthropocene.

20 Big U.S. Cities that Should Worry About Sea Level Rise

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20 Big U.S. Cities that Should Worry About Sea Level Rise

A new study highlights 180 regions in the U.S. where sea level rise is likely to have a major impact. Here are photos of the 20 cities with populations over 300,000 which are likely to be affected.

Colorado River Basin Supply vs. Use

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Colorado River Basin Supply vs. Use

With drought, increasing water consumption, and climate change, the Colorado River Basin — lifeblood of the Southwest — appears headed for a day of reckoning.

Water, Water, Everywhere: 2011’s Floods

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Water, Water, Everywhere: 2011’s Floods

Massive floods struck three countries this week: Australia, Brazil, and Sri Lanka