T. rex could become most expensive fossil ever - but it's a problem for scientists
A rare T. rex fossil named Gus is set to be auctioned for over $30 million, sparking debate about the commercialization of scientific specimens. Scientists argue that such fossils should be preserved in museums for research rather than sold to private collectors.
Why it matters
The sale of scientifically significant fossils to private buyers limits public access and academic study of prehistoric history.
T. rex could become most expensive fossil ever - but it's a problem for scientists
Image source, Matthew Sherman By Esme Stallard Senior climate and science reporter In 1997, Sotheby's hosted its first natural history auction selling fossils and other wonders of our prehistoric world.
It was a niche event mostly attended by the world's museums looking for specimens to add to their collections.
On the books that day was a Tyrannosaurus Rex called Sue - she was eventually sold for $8m (£6m) to the Field Museum in Chicago.
Nearly 30 years later, on Tuesday, another T. rex will make an appearance at the annual auction - one of the most complete specimens of this kind ever found.
And this time it is not just scientists who are dinosaur-hunting but also the super-rich.
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