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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.

Coal Use Declining in the U.S.

Coal Use Declining in the U.S.

Here's how the decline in coal use is linked to climate-friendly cars.

What Makes a Car Climate Friendly?

What Makes a Car Climate Friendly?

Here's what makes a car climate friendly.

Hottest Days Coming Earlier

Hottest Days Coming Earlier

The first day with summer-like temperatures is happening earlier for most of these cities.

Rising Global Temperatures and CO2

Rising Global Temperatures and CO2

The amount of carbon dioxide in the atmosphere has a strong correlation with rising temperatures.