Eric Ralls

The Grand Canyon is missing roughly a billion years of rock. Scientists say an enormous ancient cliff may help explain where it went.

Solar farms provide clean energy, but new research from China suggests rapid development can come at a cost to birds and their habitat.

Researchers studied the Korean speaking style known as aegyo and found vowel changes that could help adults make their voices sound smaller and younger.

A tiny head-mounted microscope lets researchers watch and activate individual brain cells while mice move freely.

In a study of 1,283 adults averaging age 23, artery walls were thicker in those carrying more weight and metabolic risk factors.

City lighting rules reduced nighttime brightness, especially blue light, while nearby trees shifted back toward more natural seasonal rhythms.

North Atlantic seawater changed its chemical signature with every ice age, complicating how researchers reconstruct ancient ocean currents.

Nature may do more than relieve stress, with evidence suggesting it can improve mood and thinking even when people already feel fine.

Engineers developed a lunar traffic control system to help spacecraft safely dock, park, and avoid collisions around NASA's Gateway.

A protective vest flown aboard Artemis I could cut astronauts' radiation exposure during powerful solar storms by as much as 60%.