Melissa Joan Hart shared on Instagram that her husband, Mark Wilkerson, gave her engagement ring an 'upgrade' for Valentine's ...

Not all scars are created equal. That's the conclusion of a new study by Weizmann Institute of Science researchers: They found that two distinct types of scars, referred to as "hot" and "cold," can ...

NASA sent a valentine to space lovers on social media this week posting images of heart shapes found on Mars. The pictures ...