A 54-pound (25-kilogram) rock. Estimated auction price: $2 million to $4 million. Why so expensive? It's the largest piece of ...

Sotheby’s may be better known for Warhols and Picassos, but this week, the Upper East Side auction house is going full geek. Through July 15, the annual Geek Week exhibition returns, transforming the ...

For those who associate Sotheby’s with blue-chip art sales, Geek Week is a reminder that the auction house doubles as a ...

Another highlight from the category is the “largest piece of Mars on Earth.” The Martian Meteorite, which Sotheby’s has ...

A 6-foot-tall Ceratosaurus fossil is going up for auction at Sotheby’s this July. Find out what makes this dinosaur so rare and valuable.

Sotheby's is auctioning a Ceratosaurus skeleton that used to be displayed at the Mountain America Museum of Ancient Life in Utah. Do dinosaur bones belong in a museum or a "McMansion?" ...

A dinosaur from the Jurassic period is headed to the auction block. This juvenile Ceratosaurus was discovered in Wyoming almost 30 years ago. It's 6 feet tall and consists of 139 original fossil bone ...

The 150-million-year-old specimen is valued at up to $6 million by Sotheby’s. Some paleontologists worry this auction and earlier ones are driving fossil market speculators.

A two-week-long music festival in central London has cancelled its final night on Sunday after Jeff Lynne’s Electric Light ...