The Cave of Crystals is a massive cavern, filled with gigantic gypsum crystals, larger than any crystals ever before seen on Earth.

One of the world’s most incredible, yet unsung, ecosystems, karsts are home to a remarkable biological diversity.

Diamonds are sparkly. Diamonds are expensive. But diamonds are more than bling—they tell us a lot about the earth, itself.

New findings indicate life on earth is older than we thought.