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Longer Heat Streaks Across the U.S.

Longer Heat Streaks Across the U.S.

The length of annual heat streaks — the number of consecutive hot days — is increasing in these cities.

Future Days Above 95°F

Future Days Above 95°F

Here's how the number of days with extreme heat will rise in the second half of the century.

Nights Are Getting Warmer Across the U.S.

Nights Are Getting Warmer Across the U.S.

Trends in nighttime temperatures are a symptom of a world warming from from climate change.

Climate Change’s Role in Tick Migration

Climate Change’s Role in Tick Migration

Here’s how climate change plays a role in tick migration and the spread of Lyme disease.

More Hot Days Across the U.S.

More Hot Days Across the U.S.

See the trend in hot days in these U.S. cities.

Small Change in Average, Big Change in Extremes

Small Change in Average, Big Change in Extremes

A small increase in average temperature leads to a big increase in extreme heat.

Dead Zones: Warming Oceans Hold Less Oxygen

Dead Zones: Warming Oceans Hold Less Oxygen

Warming waters are decreasing oxygen in the oceans, creating dead zones for marine plants and animals.

As CO2 Goes Up, Ocean Health Goes Down

As CO2 Goes Up, Ocean Health Goes Down

Excessive carbon emissions are worsening the ocean's health.