The Earth is really, really old. Over 4 1/2 billion years old, in fact. How do we begin to comprehend a number that large? It helps to put it on a more fathomable scale. Watch to see where Earth's ...

Astrologer Lisa Stardust explains Earth signs Taurus, Virgo, and Capricorn to PEOPLE — from their shared characteristics to their compatibility with other zodiac signs Kelsie Gibson is the SEO ...