Arctic Sea Ice: The New Normal
The Arctic’s frozen waters have entered a radically new state.
Storing CO2 to Protect the Climate
How a deep-drilling experiment is fighting climate change.
Water Underground
Drought stressed the groundwater stores of the southern United States in 2011 and 2012.
El Niño to La Niña
In 2010, El Niño switched quickly to a strong La Niña, resulting in intense weather.
Ozone's Slow Recovery
Although 2010’s ozone hole was sizeable, Earth’s ozone layer is on the mend.
