The Environment

In an effort to reduce prices at the pump, an EPA wavier allows the sale of fuel with 15 percent ethanol content

Constructed by ancient Egyptians, the Great Pyramid has survived multiple earthquakes through the ages—now researchers think they know why

This year’s expected El Niño could hamper hurricanes in the Atlantic but boost them in the central and eastern Pacific

Some extinct human ancestors and modern-day apes appear to share wrist traits that raise the question of whether our last common ancestor walked on its knuckles

A Bermuda high parked over the western Atlantic is pulling sweltering air up from the south, challenging records in parts of the eastern U.S.

March was a scorching 9.35 degrees Fahrenheit hotter than the 20th-century average for the month, capping the hottest 12-month stretch for the U.S. since records began in 1895

The long-tailed pygmy rice rat is the primary host for Andes virus, the type of hantavirus responsible for sickening passengers on the MV Hondius cruise ship

A strange, tiny fish that resembles the famous Sesame Street character camouflages amid red algae thanks to its flamboyant reddish “hairs”

This snail became the first animal living on deep-sea hydrothermal vents to be added to the IUCN Red List of Threatened Species—it also turns poisonous sulfur into armor

The El Niño climate event is due to return this year, with U.S. forecasters predicting an 82 percent chance of it coming in May through July and a 96 percent chance for it doing so in December through February 2027

The rare isotope helium-3 is one of Earth’s most precious commodities—so precious, in fact, that it might prove profitable to mine from the moon

Despite decades of damage, the Persian Gulf’s ecological marvels remain—for now