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From the lightbulb to the airplane, to medical breakthroughs and the internet age, the past 250 years have been defined by America's intrepid intellect.

From space to healthcare and artificial intelligence, what could the next 250 years of the United States look like?

Dinosaur fossils are rare to find in Antarctica because of the unforgiving ice caps. But millions of years ago, the region was populated by lush forests.

The $30 million salvage operation gets underway as soon as this week with the planned launch of a robotic lifesaver.

The featherweight pair -- orbiting a star 1,110 light-years away -- are the biggest exoplanets found to have less density than cotton candy.

Human and animal remains unearthed in Egypt's Nile Delta reveal changing funerary practices over some 600 years, and the evolution of a key site itself.

Euclid is on a mission to chart one-third of the sky in the hopes of shedding light on the enduring mysteries of dark matter and dark energy.

Exactly where the comet 3I/ATLAS came from within the Milky Way remains a mystery.

The goblin shark had only previously been seen when caught by fishermen and they died shortly afterward.

The researchers saw many strange animals -- many believed to be new to science -- living off the whale carcasses.