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Chris Hadfield
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Hey Bill Nye! Which Extinct Animal Would You Like to See Alive Again?

Given all the animals that have gone extinct during Earth's 4.5 billion year history, Bill Nye would venture back to the 1700s to revive a lovable lost sea animal then living off the coast of Alaska.

Christian: Hello Mr. Nye. My question is that even though it would never happen if you could go back in time to observe any prehistoric animal or animals which would it be? For me it would be the giant arthropods of the carboniferous.

Bill Nye: Well Christian, this is a fabulous hypothetical question but let’s say we didn’t go prehistoric. Let’s say we went historic. The animal that I would like to see is the Steller’s sea cow. This is a marine mammal apparently very much like a manatee but lived in salt water in the Bering Sea and then off Alaska or Siberia. And this thing was driven to extinction not too long ago, the 1700s. And I can imagine an extraordinary technology that will take the bones of one of these creatures which are in certain collections and somehow reproduce effectively enough the DNA of that animal and have him or her come back and start over again. Because that animal very recently was in the ecosystem up there, as I say up there, in Alaska and Siberia, the Bering Sea perhaps. That it might be a great thing to actually reintroduce it to the ecosystem. And it would be a spectacular deal. As far as going way back in time, what sells in movies? Giant ancient dinosaurs. I give you though that the huge millipedes that you were talking about, Christian, that’s cool. But it’s not first on my list. We’ll see how it goes. It’s a cool question.

If science fiction and the modern cinema have taught us one lesson, it is to never, ever bring carnivorous, land-based dinosaurs back to life. Perhaps that is part of Bill Nye's motivation to choose a cuddlier, less life-threatening species to attempt to reanimate.


Steller's sea cow is not an obvious choice for anyone looking to relive the majesty of bygone animal epochs, but then you would hope a career science educator like Bill Nye would bring just such an unfamiliar animal back into the public imagination.

This species of manatee, studied and documented exclusively by Georg Steller, was the Big Friendly Giant of the ocean. Growing to a length of 10 meters and weighing between 5 and 10 tons, it lacked any teeth at all, instead depending on a padded mouth to chew kelp.

Sadly, it took human explores only 27 years to drive the Steller sea cow into extinction, according to the BBC. First discovered by Captain Vitus Bering of the Russian Navy in 1741, the last remaining sea cow was reportedly killed in 1768. One report of the time said that one sea cow could feed a crew of 33 men for a month, making the meat an incredibly rich source of food.

Here Bill Nye discusses potential technology that, by analyzing the DNA inside Steller sea cow bones, could provide enough genetic information to reintroduce the species into the wild. Because some species of manatee still live in the wild, scientists would not need to go full Jurassic Park. They could potentially supplement missing genetic material from actual manatees, not frogs.

Bill Nye's most recent book is Unstoppable: Harnessing Science to Change the World.

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