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Bringing Extinct Species Back to Life: Stewart Brand at TED

UPDATE: Read Stewart Brand’s answers to questions on Reddit:IamA.

Speaking before a full house at this week’s TED Conference in Long Beach, California, tech-legend and environmentalist Stewart Brand said scientists now have the knowledge and the tools to bring extinct species back to life. First up: the Tyrannosaurus rex. Sorry, I mean the passenger pigeon.

Why not a T. rex? “All the ten-year-old boys of the world will grieve, but dinosaurs are off the table,” he told me later. “We’d love to have them back, but you cannot clone from stone.”

The passenger pigeon, on the other hand, was still alive in the first half of the 20th century. Its DNA is still fairly fresh, stored in the cells of many museum samples.

For untold centuries the incredibly docile and inconceivably numerous passenger pigeon was a major food source for North Americans. “Flocks that were a mile wide and 400 miles long used to darken the sun,” Brand said.

After over-harvesting and habitat destruction led to the species’ extinction, public shock and sadness inspired action that protected the bison from a similar fate. Other species have not been so lucky, including some pretty spectacular ones, such as the large carnivorous marsupial known as the thylacine, which is preserved in some old film which he showed.

He then detailed just how he and a group of researchers around the world are coming together to make it happen. National Geographic Explorer Beth Shapiro is among them, having already sequenced the passenger pigeon DNA. They and others will be gathering at National Geographic headquarters in Washington, D.C. on March 15 for a TEDx DeExtinction conference open to the public. It will also be streamed live online.

Scientists are investigating many different ways of resurrecting species, and they will all be discussed at the TEDx conference, but for the passenger pigeon, the plan is to follow the pattern of Beth Shapiro’s sequenced DNA and inject new copies of it into cells in the gonads of chickens.

Then when those chickens mate, their offspring will be formed from naturally combined passenger pigeon DNA.

“It won’t be perfect,” he said, “but it should be perfect enough, because nature doesn’t do perfect.”


No Bull. Well, Some Bulls.

Another team is taking a different approach, selectively breeding the most ancient lineages of cattle to recreate the massive aurochs, the wild ancestor of all domestic cattle, immortalized (to a degree) in the naturalistic cave paintings by Ice Age Europeans (read posts about rock art).

This is not just for show. Aurochs movements and feeding kept the landscape a mixture of open forest and meadow, far different from the dense forests the world now associates with wild Europe. Bringing the huge herbivores back would help restore the earlier ecology of the continent.

Thinking of the ecological disaster that elk have wrought in the American west in the absence of wolves, I asked Brand what was going to keep the aurochs population in check.

“The things that used to feed on them were saber-toothed cats and the short-faced bear. We’re not in a big hurry to bring those guys back.

“Fence technology is coming along very far and very well and eventually you’ll be able to have fenced-in areas and have big, scary carnivores back. But in the meantime there’s lots of hunters who’ll be perfectly happy to fill the short-faced bear niche.”


And What About the Woolly Mammoth?

“This is a long slow project. It’s a multi-generation process,” Brand says. Looking confidently into the future he simply states, “We will get woolly mammoths back.”

If this all sounds too Jurassic-Park-like, and you’re thinking that humans shouldn’t be messing with the landscape and presence or absence of species, Brand offers some perspective.

“Fact is, humans have made a huge hole in nature over the past 10,000 years,” he says. Maybe it’s time we tried to close it back up.


NEXT: Read Stewart Brand’s Answers to Your Questions on Reddit IAmA


Learn More

TEDx DeExtinction: Which Animal Species Could Be Revived?

Read All Nat Geo Posts From TED 2013

Follow TEDx DeExtinction on Twitter


  1. vanderleun
    United States
    March 30, 2013, 4:14 pm

    Vice tells this plastic frog like it is:

    “Stewart Brand and his team of mad scientists want to bring extinct animals back to life. While we’re at it, why don’t we have the olympics on Mars? Why don’t I have a carbon fiber toilet seat? Oh yeah, because those ideas would cost a shitload of money and everyone everywhere is broke. Surely it would be cheaper and better for the environment to preserve the flora and endangered species that we still have.”

  2. Chris
    March 7, 2013, 4:43 pm

    I’m all for bringing them back by cloning experiments but I don’t believe the selective breeding of Aurochs will achieve anything. this plan has been around for years but all it will produce is domestic cattle that looks like a aurochs. So many genes have been lost in domestication or replaced by mutations. It’s like saying you’ll breed a wolf from a german shepherd. it may look like a wolf and be wild but it is never a real wolf; just another breed of domestic dog

  3. Brian
    March 4, 2013, 10:07 am

    There’s a lot of talk here about HOW “de-extinction” could be achieved. It was not until the very end of the article where there was a very short, “feel good” reason as to WHY. The “why” should be more well developed before the “how”.

  4. joe
    March 4, 2013, 5:08 am

    Y Wait ! Life is so short! and, time fly’s! Y let! are grand son or great !grand son! too ! see it! first! were the ones ! first! who are interested in! with Anticipation! now! Forget! political laws! views and religion Bullshit! Hypocrisy! that Prohibited! everything! In the past! like the Earth! was still Flat! and center of the Universe! Only for not too! get anywhere! its 2013 now! Y! the wait! make it Happen ! So the young generations! will be excited! and overwhelmed! And We will Be Proud! and Happy! too ! accomplish this! and moreover! it’ll let us study! about the past of nature of things! and will acknowledge! us! some intellectual truth!