ESO's Paranal Observatory, in Chile's Atacama Desert, has some of the world's clearest and darkest skies. But a new construction project now threatens them.
Millions of Americans are under the threat for severe weather Sunday and Monday. Damaging wind gusts, large hail and significant tornadoes are all possible.
A new study on human evolution says that our ancestors split into 2 groups 1.5 million years ago, then merged to form modern humans, 300,000 years ago.
The National Hurricane Center's new report on Hurricane Helene reveals a death total of nearly 250, making it the deadliest hurricane since Katrina in 2005.
Artifacts and human remains from Tinshemet Cave in central Israel indicate that modern humans and Neanderthals in the Levant interacted with each other.
Equinox shadows are unique. On this day - and only this day - the tip of an upright stick's shadow follows a straight path, west to east, all day long.