When we talk about feats of engineering, very few megastructures on Earth rival the sheer scale of China's Three Gorges Dam. It's located in Hubei province, spanning the mighty Yangtze River, and it's ...

Over the past two centuries, the construction of thousands of dams has done more than just tame rivers – it has shifted the Earth’s North Pole about a meter from its original position. By storing ...

NEW YORK — For sale: A 54-pound (25-kilogram) rock. Estimated auction price: $2 million to $4 million. Why so expensive? It's the largest piece of Mars ever found on Earth. Sotheby's in New York will ...

The meteorite is believed to have been blown off the surface of Mars by a massive asteroid strike before traveling 140 million miles to Earth, where it crashed into the Sahara. A Martian meteorite, ...

For sale: A 54-pound (25-kilogram) rock. Estimated auction price: $2 million to $4 million. Why so expensive? It's the largest piece of Mars ever found on Earth. Sotheby's in New York will be ...

A meteorite that is the largest known piece of Mars on Earth is expected to fetch up to $4 million. It’s up for auction at Sotheby’s. Known as NWA 16788, the meteorite weighs 54 pounds (24.5 kilograms ...

NEW YORK (AP) — For sale: A 54-pound (25-kilogram) rock. Estimated auction price: $2 million to $4 million. Why so expensive? It's the largest piece of Mars ever found on Earth. Sotheby's in New York ...