The Arctic’s frozen waters have entered a radically new state.
How a deep-drilling experiment is fighting climate change.
Scientists analyze evidence from glaciers from the last ice age to understand climate change today.
Drought stressed the groundwater stores of the southern United States in 2011 and 2012.
In 2010, El Niño switched quickly to a strong La Niña, resulting in intense weather.
Scientists map Port-au-Prince's earthquake zone in detail for the first time.
Volcanologists use every device at their disposal to monitor Sicily's restless Mount Etna.
Although 2010’s ozone hole was sizeable, Earth’s ozone layer is on the mend.
Scientists plumb ancient mineral crystals to understand Earth's earliest era.
An innovative twin-satellite mission is watching water move across our blue planet.