Climate scientists and policymakers have long warned of a dangerous threshold: If global temperatures rise more than 1.5 degrees Celsius above preindustrial averages, we risk devastating consequences, including severe flooding, heat waves, and drought.

Beginning in the late 1990s, air pollution declined in New York City following the implementation of clean air and climate policies.

Certain kinds of clouds are misbehaving – appearing more often and lower in the sky than they used to.

An eastern box turtle living in the New Hope Creek watershed near Duke’s campus wants to leave its habitat in search of resources or a mate.

The severe, drought-fueled fires now burning across much of the American West and Canada may be scorching forests so thoroughly that they cannot recover to the forests they once were, new research shows.

An ongoing drought in Europe has sapped French rivers. Officials say that 43 percent of small waterways in France have been partially or completely dried up.

In 1989, the Voyager 2 mission discovered six new moons orbiting Neptune, including five tiny ones that orbit just outside the planet's main rings.

For several years, climate scientists have shown that the Atlantic Meridional Overturning Circulation (AMOC) could come to a halt if the world warms too much. 

As part of The Conversations’ “Curious Kids” series, an astronomer explains how a runaway greenhouse effect has made the surface temperature of Venus hot enough to melt lead.

El Niño is expected to intensify in the weeks ahead, fueling more severe heat across the globe, according to the U.N. World Meteorological Organization.