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Wouldn't that also require the atmosphere of the Earth to contain 33% oxygen again?
It dropped by a third, which is less than the difference between New York and La Paz, so I guess they could deal with it? I wonder how well their immune systems would handle modern germs, though...
I find it fascinating that we may be able to clone extinct species, but I agree with the warnings about the dangers of de-extinction. Just because we can do something doesn't mean we should. It's important to consider the potential consequences of bringing back ancient species, both for the animals themselves and for the ecosystem. It's also worth noting that even if we are able to successfully clone a dinosaur, it's…
However if you want dinosaur-like creatures, you're basically talking giant flightless birds. So, start with something like an ostritch or a rhea, and use CRISPR to make selective edits aimed at increasing leg size and bone density. This would require a comprehensive understanding of development in these species, of course, and that's probably not there yet. You'd also want to create a fairly diverse source population so the new species wouldn't suffer from inbreeding issues.
Once you got the leg strength and body mass up, it's time to go for big sharp teeth. Increase spine strength and musculature, and then reactive that talpid2 gene with modifications that allow the embryos to survive to adulthood:
https://www.science.org/content/article/mutant-chickens-grow...
Now, would this giant mutant toothed ostrich be a dinosaur? For all intents and purposes, yes. Would doing this be a good idea, would you want these things running around suburban neighborhoods devouring stray cats and terrorizing the local human population? Maybe not.
Basically if we bring back dinosaurs it will be to torture them for our amusement and curiosity. Even if unintentional. The movies make us think Jurassic Park but the reality would be more like a slaughter house or medical experiment lab. The movie wouldn't be exciting if every scene was the same as that sick triceratops. Its actually hilarious if you think up a version of the movie in your head where they just walk around watching animals dying and laboring to breath.
"they're hunting us!"
"lol JK you should have seen your face. No they would pass out after two steps if they tried to chase us. We have to feed them through tubes because they don't even have the energy to chew"
I find it fascinating that we may be able to clone extinct species, but I agree with the warnings about the dangers of de-extinction. Just because we can do something doesn't mean we should. It's important to consider the potential consequences of bringing back ancient species, both for the animals themselves and for the ecosystem. It's also worth noting that even if we are able to successfully clone a dinosaur, it's…
The dinosaurs lived in an incomprehensibly different world. From the food and nutrition to the very air they were breathing which we only have vague ideas about. That means the first several generations at the very least would suffer and die from various nutrition, toxicity and environment issues. Even after all that got figured out the dinosaurs would likely have be confined to some small controlled environment righ…
Earlier quoted context omitted.
I don't think anyone is considering this as really bringing them back and releasing them into an ecosystem, just Jurassic Park type novelty.
If you bring them back, it's only a matter of time before they are in the ecosystem. Maybe we contain it for a decade, a century at most but it's going to happen. It's basically the plot of the entire movie series.
The dinosaurs lived in an incomprehensibly different world. From the food and nutrition to the very air they were breathing which we only have vague ideas about. That means the first several generations at the very least would suffer and die from various nutrition, toxicity and environment issues. Even after all that got figured out the dinosaurs would likely have be confined to some small controlled environment righ…
The dinosaurs lived in an incomprehensibly different world. From the food and nutrition to the very air they were breathing which we only have vague ideas about. That means the first several generations at the very least would suffer and die from various nutrition, toxicity and environment issues. Even after all that got figured out the dinosaurs would likely have be confined to some small controlled environment righ…
I mean, what could possibly go wrong?