Science

The fossilized bones, in particular, could suggest people lived in North America tens of thousands of years before the generally accepted date for the arrival of the first Native Americans of about 10,000 B.C. BCE.

For the first time in four decades, America’s fifth-longest river went dry in the New Mexico city last week.

The annual Florida Python Challenge invites novices to hunt invasive Burmese pythons alongside professionals and compete for cash prizes.

The report comes as UNESCO considers whether to list the Great Barrier Reef as “in danger.”

The director general of the International Atomic Energy Agency said the situation is getting more perilous every day at the Zaporizhzhia plant in Enerhodar, which Russian troops seized in early March.

The Icelandic Meteorological Office urged people not to go near the Fagradalsfjall volcano, which is located some 20 miles southwest of the capital, Reykjavik.

The new research challenges the idea that the beginning of cell death is irreversible, though bioethicists say it also poses significant questions.

There are more yearly deaths attributed to heat than to other weather disasters, including floods, hurricanes and tornadoes.

Toxic plaque buildup in the brain may play a role in the disease, but in the search for effective treatments, researchers are looking to other potential causes.

Modern giant pandas are a celebrated national symbol in China, and the idea their ancestors came from Europe is not welcome there.

Local governments spent the cooler months preparing for impacts — with some evidence that the new planning, while incomplete, was paying off.