The Gulf of Mexico dead zone is much smaller than usual this year because Hurricane Hanna stirred up the area of low-oxygen water.

The long journey of these compounds - likely originating in the U.S. and Eurasia - shows the far-reaching impacts of industrial pollution.

Some rainstorms drench you in a second, while others drop rain in a nice peaceful drizzle. A meteorologist explains how rainstorms can be so different.

A small but evolving dent in Earth’s magnetic field can cause big headaches for satellites.

2019 ranks among the 3 warmest years in records dating to the mid-1800s. In 2019, greenhouse gases reached their highest levels on record. Both facts are from the 30th annual State of the Climate report, a review of world climate based on contributions from more than 520 scientists in over 60 countries.

Recent reports of dramatic declines in insect populations have sparked concern about an 'insect apocalypse.' But a new analysis of data from sites across North America suggests the case isn't proven.

Following an active 2019 season, fires in Siberia in 2020 have again been abundant and widespread, and have produced abnormally large carbon emissions.

Satellite images have revealed 11 previously unknown emperor penguin colonies in Antarctica, identified by telltale reddish-brown guano stains the birds leave on the ice.

On Wednesday, forecasters at Colorado State increased their prediction for the number of named storms in the Atlantic in 2020 to 24 named storms and 5 major hurricanes.

How we worked out when whales first evolved asymmetrical skulls.