Author: Doyle Rice, USA TODAY

The colossal, long-extinct beast lived 5 million to 10 million years ago and measured at 9 1/2 feet – roughly the size and shape of a midsized car.

Researchers studied recent extinctions from climate change to estimate how many species would be lost over the next 50 years.

The new decade is off to a hot start. The Earth just had its warmest January on record, scientists announced Thursday.

Pine Island is one of the fastest-retreating glaciers in Antarctica, NASA says. The break-off is “both terrifying and beautiful,” one scientist said.

Some rare good news from the climate change front. Global emissions of carbon dioxide in 2019 were level with those of 2018, a new report says.

For the first time, scientists have detected a radio signal from space that repeats at regular intervals. But it’s probably not aliens, experts said.

A rare winter storm coated Baghdad in snow Tuesday morning for only the second time in the Iraqi capital in the past century.

A new species of tyrannosaur has been discovered in Canada, according to a new study released Monday.

Antarctica made worldwide news when one location – an Argentine research base – set a record high temperature for the continent of 64.9 degrees.