T. rex skeleton to be auctioned at Sotheby's for $20–30m — scientists alarmed

One of the largest and most complete T. rex skeletons ever found goes under the hammer at Sotheby's in New York on Tuesday, with an estimated price of $20m–$30m (£15m–£22.4m). Palaeontologists warn that wealthy private collectors buying up fossils are cutting off access for researchers and harming scientific progress.