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New York: July Days Over 90 Degrees

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New York: July Days Over 90 Degrees

By mid-century in New York, the sweltering heat of July 2010 may be thought of as cooler-than-average conditions, as more days above 90°F routinely occur.

Philadelphia: July Days Over 90 Degrees

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Philadelphia: July Days Over 90 Degrees

By mid-century in Philadelphia, the sweltering heat of July 2010 may be thought of as cooler-than-average conditions, as more days above 90°F routinely occur.

Boston: July Days Over 90 Degrees

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Boston: July Days Over 90 Degrees

By mid-century in Boston, the sweltering heat of July 2010 may be thought of as cooler-than-average conditions, as more days above 90°F routinely occur.

Washington, DC: July Days Over 90 Degrees

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Washington, DC: July Days Over 90 Degrees

By mid-century in Washington, DC, the sweltering heat of July 2010 may be thought of as cooler-than-average conditions, as more days above 90°F routinely occur.

Cape Verde Hurricanes

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Cape Verde Hurricanes

Hurricanes that form in the Cape Verde region have a long trajectory over warm oceans — which are ideal conditions for hurricane intensification.

Northeast: July Days Over 95 Degrees

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Northeast: July Days Over 95 Degrees

Present vs. projected July days over 95 degrees Fahrenheit

Sea Surface Temperature Anomalies

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Sea Surface Temperature Anomalies

Sea surface temperature anomalies in 2005 and 2010. The area inside the box indicates the 'Main Development Region' where most hurricanes form.

Low-Carbon Power

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Low-Carbon Power

Half of our electricity today comes from carbon-intensive coal. How might an 80 percent reduction in greenhouse gas emissions be achieved by 2050, when electricity needs might be 50 percent higher than today?