Add Yahoo as a preferred source to see more of our stories on Google. Can anything travel faster than light? While Einstein's theory says no, a recent experiment might make you think twice. Learn how ...

See this year's winning optical illusions and learn how they make the brain perceive things that are not reality.

Can anything travel faster than light? While Einstein's theory says no, a recent experiment might make you think twice. Learn how scientists created a scenario where a 'hole' in a light wave outpaced ...