A light burns eternally in a field in Turkmenistan. The Gates of Hell crater has been on fire continuously since 1971, creating a bizarre tourist attraction.

The ECCO camper concept RV by design firm NAU is a sleek, streamlined, zero-local-emission RV that's more winning than any old (or new) Winnebago.

Traditional rural architecture like farmhouses, barns and carriage houses are converted into bright, modern, livable homes that retain a sense of history.

Ancient paintings estimated to be 32,000 years old, found in a cave in France, are explored by director Werner Herzog in the film 'Cave of Forgotten Dreams.'

Plastics are a big environmental drain, but we depend on them for so much. This alternative is better for the Earth but would cost the same to produce.

Among the 42 sites considered for inscription on UNESCO's World Heritage List this June are 10 new natural properties deserving of appreciation and protection.

Growing rapidly in diverse climates, bamboo proves to be an ideal sustainable low-cost building material for these 13 structures, from restaurants to schools.

14 schools around the world can teach us all about how environmentally sensitive features can benefit students as well as entire communities.

An artist injects the bodies of small animals with dyes to create tiny works of art that art part science and entirely fascinating.

The Bisti Egg Garden is an unusual, atypical and accessible rock formation located in the Bisti Wilderness Area near Farmington, New Mexico. Eggs-cellent!

These 7 flowers represent the world's largest, smallest, deadliest and smelliest, from prehistoric desert blooms to lilies that stand nearly 10 feet tall.

Spiraling into the sky, this green residential tower designed for Denver is built atop a volume of retail, restaurants, parks, recreation space and gardens.

These smart shades feature modular solar panels that let summer-loving adventurers enjoy the shade while reaping the benefits of the sun all at once.

If these tilted rocks look oddly familiar, it's because Vasquez Rocks Park, just north of Los Angeles, is one of Hollywood's favorite sci-fi filming locations.

Dreaming about a dip in a cool crystal-clear pool? These 13 natural swimming holes around the world, from Alabama to Laos, will tempt you to make travel plans.