Several high-end Apple computers are sold out on the company's online store, and there's no indication when they'll be back ...

Quantum computers promise to revolutionize whole industries by outperforming classical computers on complex calculations. They just need to be colder than the coldest natural place in the universe.

Computers that use light instead of circuits to run calculations may sound like a plot point from a Star Trek episode, but researchers have been working on this novel approach to computing for years.