When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. Jupiter's icy moon Europa, regarded as perhaps the solar system's best bet to host alien life, ...

Climbers who make it to the top of Mount Everest may not know it, but under the snowpack sits an expanse of mottled gray rocks that once lay on the ocean floor. Rising at the border of Tibet and Nepal ...

Gem hunters have always been natural geologists, seeking the mother lode long before researchers explained how gems and minerals form. Now, scientists want to officially link precious gems to their ...