Rotating black holes could leave a twisty signature on light escaping their gravitational maws. If this screwy light can be detected from Earth, it would give astronomers a new way to detect exotic black holes and a new test of Einstein’s theory of general relativity, says a team of physicists.

“For relativity, it’s very important,” said physicist Martin Bojowald at Penn State University, who was not involved in the new work. “There are very few classic tests of relativity. It now seems that we are pretty close to actually using this.”

Black holes are greedy beasts. Not only do they attract...

It's Valentine's Day, and in honor of all the romance in the air, the editors over at Kelley Blue Book chose 10 cars that are "turn-ons" for drivers and passengers.

It was a good list, but we wanted to expand on it and offer some of our own suggestions. After all, not everyone can afford a brand new R8 to entice members of the opposite sex, and we're pretty sure that most dates we've been on would've ended abruptly the moment a Ford Transit Connect entered the picture.

So, without further ado, here are 15 cars that we think will get you in the mood for love -- or at least a long drive.

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