Gallery Section
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More CO2 = More Pollen

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More CO2 = More Pollen

If CO2 emissions continue at the current pace, pollen counts are projected to nearly double by 2060.

Spring is Arriving Earlier in the U.S.

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Spring is Arriving Earlier in the U.S.

Spring is arriving earlier across the U.S. by an average of three days.

Frost Free Season is Getting Longer

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Frost Free Season is Getting Longer

All regions of the continental U.S. have seen the frost-free season, defined as the stretch between the last below-32°F reading in the spring and the first in the fall, grow longer.

Poison Ivy in a Warming World

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Poison Ivy in a Warming World

Scientists say increased CO2 emissions are making poison ivy worse.

Fall Temperature & Rainfall Trends

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Fall Temperature & Rainfall Trends

A look at how both precipitation and temperature have changed this season since 1970.

Autumn is Falling Back

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Autumn is Falling Back

Foliage color and timing has been starting later, on average, in a warming world.

Drought Comparison: 2012 vs. 2013

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Drought Comparison: 2012 vs. 2013

Sixty two percent of the country was in some level of drought last August, but that number has been reduced to 45 percent this August.

Significant Events for Spring 2013

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Significant Events for Spring 2013

The highlights of NOAA's 2013 Spring climate summary.