Earth has a variety of islands and bodies of water that resemble a heart. ESA takes you on a tour. Credit: ESA ...

Scientists are starting to understand more about the small heart muscle fibers that Da Vinci showed in his illustrations over ...

New research of a Martian meteorite suggests that water - an essential ingredient for life - arose in hot springs on Mars 4.4 ...

There's nothing wrong with wearing your heart on your sleeve, but when it comes to decorating your home for Valentine's Day, ...