The California redwoods are a stunning landmark in their own right, but nestled in the forest is one bizarre, unexplainable ...

Gravity used to be the most down-to-earth of ideas, the thing that kept apples falling and planets in line. Now a growing ...

For more than a decade, scientists have accepted that Titan, Saturn’s biggest moon, has a subsurface ocean of liquid water. A ...

For close to a century, scientists have been trying to marry Albert Einstein’s General Theory of Relativity and quantum theory—our two best bets on understanding the universe on a macroscopic and ...