A study published May 13 in Physical Review Letters has confirmed that radioactive iron forged inside an exploding star has ...

Earth is quietly collecting radioactive debris from an ancient stellar explosion as our Solar System drifts through a giant ...

New Delhi: At the University of California, Santa Barbara, scientists have advanced a long-standing theory of what happened to the woolly mammoths, mastodons and other animals in the Ice Age—not the ...

This has been a winter full of surprises. The Philadelphia area has seen the biggest snowstorm in 10 years and one of the longest below-freezing streaks in our history. Nearly every day since ...