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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?

Fuel Used to Make Electricity in US: 2008

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Fuel Used to Make Electricity in US: 2008

Coal was the dominant fuel used to to generate electricity in the US in 2008.

Scenario: Possible Electric Energy Sources in 2050

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Scenario: Possible Electric Energy Sources in 2050

A mix of new electricity sources by 2050 could reduce CO2 emissions by 83 percent.