Albert Einstein's famous general theory of relativity turned 100 years old this week. Who better to give you a glimpse into what the theory is all about than a Time Lord — the Tenth Doctor himself, who voices this fun animation. See more >>

By George Dvorsky on at

After two unsuccessful attempts to topple a 115-year-old chimney smokestack with explosives, a construction worker decided to bring it down with a backhoe excavator. Bad idea. See more >>