The changes could affect health, agriculture and ecosystems, the study suggests.

Study picks apart factors that caused severe, long-lasting droughts and suggests increased risk for future.

In an unusual new study, scientists say they have detected a growing fingerprint of human-driven global warming on global drought conditions starting as far back as 1900.

A new book, the second in a series of primers with the Earth Institute imprint, provides an interdisciplinary overview drought, bringing together many fields including climate science, hydrology and ecology.

A recent study is the first to show that pollutants and greenhouse gas emissions have directly affected the 20th century evolution of rainfall over a region.

A 19-year drought in the American West is one of the most severe in the past 1200 years—and climate change is partially to blame, according to new research.

The American Geophysical Union fall meeting takes place Dec. 10-14 in Washington, D.C. Here is a guide to key talks and other events from Columbia’s Earth Institute.

Park Williams, a bioclimatologist at Lamont-Doherty Earth Observatory, has found that rising temperatures influence wildfires in the American West.

The Global Famine was one of the worst humanitarian disasters in history, killing as many people as World War II. A new analysis suggests it could happen again, only worse because of climate change.

An interview with Ed Cook, one of the founding directors of the Tree-Ring Laboratory at Lamont-Doherty Earth Observatory.