Smashed windows and ransacked consoles greeted numerous car owners Tuesday in Chicago's South Loop, with seemingly no rhyme or reason for the vandalism and thefts. Chicago Police say someone in a blue ...

Eight decades have passed since physicists realized that the theories of quantum mechanics and gravity don’t fit together, and the puzzle of how to combine the two remains unsolved. In the last few ...

If the prospect of an ever-expanding universe that eventually stretches into a vast emptiness isn’t depressing enough, there’s this: the universe may have cracks in it. Cracks, called cosmic strings, ...