Should we try to bring back extinict animals?

Watch this TED talk. (It will take about 25 minutes.) Don’t worry if some of the scientific language is new to you. You will understand the concept. What do you think? Should we try to bring back extinct species? Which ones? Why or why not?

Rating: 5

37 thoughts on “Should we try to bring back extinict animals?”

  1. I believe that, while having more diversity in species could be good, the effects could be just as devastating. We need to consider if the land is sustainable for it to live on, what with all of these global issues. Competition [for food, shelter, etc.] with other species could also be a problem. We also have no way of knowing the kind of impact it could make on the planet. The process of bringing them back could also make changes to its internal structure (e.g. mutations). This goes for every extinct species out there. We should have the factor of risk inputted in this equation, and that is why I don’t think that extinct animals should be brought back. It is “safe” over “sorry”, after all.

    1. I think we should bring back extinct animals. We should bring back saber-toothed cat because it is a pretty interesting animal.

  2. It’s important to bring back all extinct species. I believe that all animals deserve to have life. We can stop this extinction process by keeping animals safe.

  3. I think that this is a very complex issue. For animals such as the passenger pigeon, who have accessible surrogate parents (chickens) and dna to work with, the process of de-extinction could be worthwhile; also, birds are not invasive and we have proof that this type of bird could thrive in our current conditions, as descendants of this species can survive with this global weather. I do think this could be dangerous for many long-since-extinct animals, though, because we run the risk of them not being able to survive with the plant-life, weather conditions, and space that we have on earth today. We also have to worry, as he mentioned briefly, about animals alive today that are endangered and nearing extinction; focusing on them now will make it less work to try to bring them back in the future. I think that this process is interesting, and that we should promote it for species that can be easily recreated and safe on the planet, but that we should not put our full efforts into it as we have bigger fish to fry.

  4. I think we should bring back some extinct animals, as long as there is adequate land, resources, and the species could not become invasive. But we shouldn’t just focus on bringing back extinct species, because we are warming up the earth, causing mass pollution, and in the process endangering more and more species. I think we need to fix what we’re currently doing before considering bringing back extinct species.

  5. I would believe that this would cause a global issue to arise, and bringing in the consideration of our lifestyle and the sustainability of the land we have changed is very crucial as well.

  6. I think that we should bring back extinct animals and I totally agree with him. I think that we should bring back the passenger pigeon. I think this because these amazing creatures could help the environment in a lot of different ways and that we shouldn’t hurt these beautiful birds.

  7. After learning about artificial selection this past school year, I can relate it to this video because Stewart Brand talked about how one can alter a relative of the extinct species to revive them/reverse their extinction. In my opinion, I if biologists, scientists and researchers, do decide to continue on with these methods of rebirth of extinct animals, they have to be careful with the tampering of these lives. Like the experimented chickens forced to give birth to the falcons, the falcon’s living situations are going to be much different then their birth parents if this were to happen in the wild. Adaptations and natural selection changes would need to take place which could potentially damage the original ecosystem, since the falcons (or other species) didn’t belong there in the first place.

  8. Most extinct animals should not be brought “back to life.” These extinct animals may disrupt local ecosystems and hurt the populations of native organisms. Moreover, some extinct animals like the Woolly Mammoth, are not suited to the current climate. Even if they are reanimated, it is not likely that they will survive. Focusing conservation efforts on the advancements of de-extinction will distract from current efforts to reduce deforestation and habitat loss (notable contributors to extinction). Limiting annual deforestation can offset our carbon footprint. If we put our faith into something that is not proven to work (i.e. the adverse health effects of these de-extinct animals) , we can forget about more effective and proactive methods of conservation. That being said, when de-extinction technology is adequately successful, recently extinct animals like Sumatran Rhino and the Chinese paddlefish can be reanimated because they already have a niche in their respective ecosystems.

  9. I believe that we should bring some extinct animals back, but not all. Species like the passenger pigeon and heath hen could be brought back, but I think that if we bring back bigger animals like wooly mammoths, the balance of life in nature will be corrupted and we may not have the power to restore it. Messing too much with nature’s course can cause problems over time. I also think that conserving animals by keeping them captive and in solid care will help. Take the Mountain Gorillas or the condor he mentioned. Years of work to restore and breed these creatures helped the populations grow. Growing numbers can either help or destroy nature.

  10. I’d say no to not bring extinct animals back to life because since these animals are birds then that means they eat bugs and probably other things. The things that the Birds eat won’t know how to defend themselves against the birds cause they won’t know what the birds like and what they don’t like. Also where ever you release the birds they will be hunted easily cause of the predator’s that are everywhere.

    Rating: 5
  11. I believe that we should focus on preserving and helping the populations of animals that exist today, especially the endangered ones. I feel that maybe those extinct species are no longer with us for a reason, possibly to make room for new life that is yet to come. Bringing back what is already gone sounds like a big risk that should not be our focus right now. We should work on improving life and sustaining what we have now. But maybe, after more studies about the pros and cons of bringing back extinct species has been done, we can work on reintroducing them into our world.

  12. I think that we should bring back some species but definitely not all of them because the ecosystem is a delicate thing that can go out of balance with one simple animal. Some of the animals from the past would be invasive species now, especially if they became extinct due to natural selection rather than any human involvement. This means that some species should come back as they can be beneficial to the environment but others shouldn’t because of just how dangerous they can be to the world.

    Rating: 5
  13. I believe that only certain extinct species should be brought back to life such as the passenger pigeon. They are capable of helping the earth and also are able to adapt to many different environments. However, larger extinct species should not be brought because they take up large amounts of space and require many sources of food, water, shelter, etc.

  14. I think it would be a poor decision to bring back extinct species because human behavior has not changed. Humans are still hunting and poaching animals and if we are the reason they went extinct then there is a great chance it will happen again. It will take many years to grow an extinct species which means it will also cost an extreme amount of money. Who will continue to pay for this? Poachers using poach because they live in poverty and need money. So I think we should help end world hunger first before adding more animals that need to be fed. I think it would not be responsible to bring back animals when the world can not help protect our environment. I think we should help the animals in danger of becoming extinct today.

  15. There are many ways to look at this. Our world is balanced right now, maybe not perfectly but it is decent. Brining back these animals can have lots of issues. For one, we’ll have to make space for them in like labs and stuff because they are coming back. We dont want them to go extinct so we’ll have to keep a close eye on them. Second, there will be competition. If they aren’t at the top of the food chain, or maybe they are, they’ll also be eating the same food as another animal. There will be a lot of competition. Finally, it isn’t worth it. We have enough animals on this planet, and bringing more will just overpopulate our world.

  16. I feel we should bring back endangered species and all species. We need to learn more about the earths past and maybe help keep the earth alive longer

  17. Bringing back already extinct animals would throw the whole ecosystem of balance, we should instead try to preserve the animals of our time and putting our best efforts in trying to save them. For example if we brought back the megaladon, then the whole ocean foodchain would just fall apart because the megeladon eats so much

  18. I belive bringing back species is a good Idea but I think that we should be careful because these species could hold diseases that we don’t know about because we did not have that scientific information when they weren’t extinct to know how to treat those diseases. Also you would need a good ego system because when one animal falls out of the food chain the enviroment gets adapted to that but then if it comes back than is could sireously hurt the enviroment.

  19. Steward Brand discussed the topic of extinction and how the field of biology is continuing to grown. He then states that humans are responsible for the extinction of many animals. He describes how he can use this process to bring things back to life. This process is very complicated and requires a living relative of the species and a full genome of the species. Scientists use new technology which can synthesize the DNA. The synthesized DNA is introduced to a certain species and the result should be the extinct animal. He ends the conversation by discussing that humans can save endangered animals. I thought this was really interesting after taking biology this year.

  20. I think the concept of bringing back extinct animals is really cool because it means that there may still be hope for current endangered species that are on the brink of extinction. In addition, it offers humans a way to make amends for the destruction they caused which led to the extinction of so many species. On the other hand however, bringing back extinct species could cause a number of problems. The biggest reason not to bring back extinct species is the damage it would cause to the current ecosystems that exist. Those species, now re-introduced to the ecosystem, would in a way be considered to be invasive. Their prey would suddenly have to face a new threat, and if there are no animals that eat the ones that have been re-introduced, the extinct species could start to overpopulate the ecosystem and cause irreversible damage to the creatures that already inhabit it. Of course, certain species would probably fit right in. As the video mentioned, a lot of extinct birds have relatives similar to them that are doing okay on the planet and therefore could probably safely come back from extinction. However, other extinct birds, like the Harpagornis moorei, which was known to be a child-eating eagle, would absolutely wreak havoc on the planet, if they were brought back. Before bringing back ANY species, I think there should be an adequate amount of research done to make sure every detail regarding the animal is set so that when and if it does come back from extinction, it won’t cause more damage than good. For now, people should focus on taking steps to prevent the extinction of more animals, especially since so many of them are considered endangered due to man-made issues like poaching.

  21. I believe that if they were killed by over hunting we should definitely try to get them back, if they went extinct from other causes then it was natural. Humans can do bad things to animals that shouldn’t happen, if it was because of other animals I would not try and bring them back because it happened naturally. Animals going extinct is mostly natural and sooner or later new animal species will be found.

  22. I believe that we should bring the species that went extinct a few decades ago because if we try to bring back species that went extinct a million years ago, the world will have changed so much that they might not be able to adjust properly. Also, the creatures that went extinct decades ago probably died out because of humans, and bringing them back will make up for us wiping them out.

  23. I think that having more types of species would be good for the food chain, but the effects it could cause in our ecosystem might be catastrophic. If we just let a wooly mammoth roam free then the environment and ecosystem might be effected in the wrong way due to the sheer size of the animal. This is why I think we should try to bring extinct animals back, but be careful on which ones we do.

    Rating: 4
  24. I think that we should bring back extinct species, But we should not bring back species that could trample entire ecosystems like mammoths. But it would be great for scientists to study them and find answers in history and science. To see why they got extinct and how to stop that from happening again. And it would be very good for a food chain.

    Rating: 4
  25. I think we should try to bring back extinct species, especially those that have been subject to damage by humans. Species that were important to regulating the ecosystems of the world, like the aurochs mentioned in the TED talk, could maybe be prioritized, as they have a specific purpose in nature. However, the idea of protecting endangered species first is a good point. Bringing back extinct species is a good idea, but the scientists who do so should consider other aspects that come with them.

  26. I think we should try to bring back extinct species, but only after we have taken care of and expanded the current endangered populations on our planet. For example, the wooly mammoth because it would bring back a lot more biodiversity to a good number of ecosystems.

  27. I think that we should not try to bring back extinct animals because they might clash with our current ecosystem and result in catastrophe.

  28. I think we should not bring back extinct animals because the people who made them extinct probably did that for a reason. And the forests are getting burned down by wildfires so those extinct species who would live in the forest would not have a place to live.

    Rating: 4
  29. I would say that maybe we should bring back only some extinct animals, such as animals that could help the environment and could reduce other animals from overpopulating as some animals are very hard to control from overpopulating which concerns its prey, or preventing others from going extinct.

  30. This is a very, very hard question to answer. If we brought the extinct animals back, they probably had different species living at their time, having millions (or even thousands) of years to adapt to living with those animals, but putting a European bull (I forgot how to spell the name,) in America will cause a very weird bend in the animal chain. If we didn’t bring them back, 1. if im being honest people would probably get angry at the organizations for not bringing these animals back, as they were hunted for skin and meat, and not naturally extinct. 2. some of these animals haven’t even been alive for hundreds of years, and it would make sense to give them a second chance, but like I said in the beginning, it would cause a very strange bend in the food chain. So it would be good and bad unfortunately either way.

    Rating: 5
  31. I do not think that we should bring the animals back, but instead focus on keeping the ones that are here, and that ones that are endangered, alive and help them thrive as they once were able to. A lot of animals went extinct in the first place because of humans, who’s to say the the existing generations can even handle these new animals and allow them to live as they should.

    Rating: 5
  32. I believe we should not bring back extinct species for multiple reasons. Firstly, many might throw off the balance of our ecosystems currently, causing damage to other animals and their environment. They might overeat certain animals and disrupt the fragile food chain. Secondly, where exactly would many of these species live, especially the larger ones? With the industrialization occurring in our technology-fueled world, nature gets smaller and smaller by the minute. Clean water is becoming rarer, as well as living space. Introducing them to the already shrinking habitat would only further stress it. Thirdly, bringing back extinct species would require lots of time and money. These resources could be used on the animals that are desperate to survive and near extinction. Besides, if we do bring them back, it doesn’t guarantee that after all the work done to revive them that they will survive. Humans won’t have changed, and poachers will still be poachers. Especially when they see an animal so exotic that it was once extinct.

  33. What do you think? Should we try to bring back extinct species? Which ones? Why or why not?

    I think that although there are many reasons people want to bring extinct species back, there are many dangerous factors in them. There is a reason for everything to happen and there was obviously a reason for this species to go extinct. Brining them back could make environments unstable and could cause them to be unbalanced which may lead to more species going extinct. And even if we do bring them back they aren’t guaranteed to survive and could end up dying off again making all that work for nothing.

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