Extinction. In 1844 Ketill Ketilsson won the race to grab the last pair of great auks. They were nesting on Iceland’s Eldey Island. Millions of these penguin-like birds had been slaughtered for feather-stuffed quilts to keep Europe’s burgeoning human population warm. Ketilsson strangled the two but tripped over and broke their egg. Never mind, he won the reward being offered by museums in Copenhagen for the final specimens.
A perverse market rule on species had been established: the rarer a species gets, the more valuable it becomes. It came too late for those who killed the last dodo, moa or Steller’s sea cow – but look at the money now going into resurrecting mammoths and thylacines.