字幕列表 影片播放 列印英文字幕 With the world's population growing every year, we need to find ways to produce more food. So, if we could bring dinosaurs back from the dead, would you eat them? How could we bring dinosaurs back from extinction? How much would they need to eat each day? And which dinosaur would be the most delicious? We're sparing no expense. Things are becoming Jurassic. This is what if, and here is what would happen if we raised dinosaurs for food! Dinosaurs haven't walked the Earth for 65 million years. But, if we managed to bring them back, could we raise them for food and eat their meat? Just like the movie Jurassic Park, we could possibly bring back dinosaurs. Did you know that dinosaur DNA is most closely related to chicken DNA? But, unlike in the movies, it wouldn't be easy to bring dinos back. We would need to have some dino DNA that hasn't deteriorated. And unfortunately, that isn't easy to come by. But let's say we did stumble upon some suitable dinosaur DNA. What would be the next steps? Well, scientists have been trying to resurrect woolly mammoths by sequencing their DNA from a frozen specimen. Then, they synthesized its genes and placed them into an Asian elephant embryo, as 99% of their genomes are similar. We could do the same thing to bring back dinosaurs, but we'd use a chicken egg instead. Then, we'd leave it under a heater and see if a dinosaur hatches. If it were a dinosaur, we'd treat it just like other farm animals we raise. And we'd need to feed that hungry dinosaur baby. So, how much would a dinosaur need to eat? Well, if you've watched Jurassic Park, you know that dinosaurs come in a range of shapes and sizes. So it depends on what the dinosaur's diet is. For instance, herbivores like the Brachiosaurus, could weigh 4 kg (8 lb) at birth. And within a few months, they could easily weigh 10 times more. Once it becomes an adult, this plant-eating giant would weigh in at a whopping 35 to 56 metric tons. That's about the same as 120 head of cattle. And it would need to eat 400 kg (880 lb) of food per day. That's how much 16 dairy cows eat in a day. But let's not forget how much meat that dinosaur would give you. You'd have quite a feast. And speaking of meat, which dinosaur do you think would taste best? Well, it's hard to know, because no one alive today has ever tried dinosaur meat. But if we compare it to the meats we enjoy, the most delicious tend to be from herbivores, the plant-eating animals. Like our Brachiosaurus. So, something like the infamous T. rex might taste a little different. We know that dinosaurs are distant relatives of birds. And fast-moving dinosaurs would mainly consist of white meat. So, a T. rex might taste like an ostrich. Maybe you'd prefer to eat seafood? Well, in that case, you might want to try eating dinosaurs that had marine diets. They might have a fishier flavor. And here's one thing you probably haven't even thought of. Recent studies have shown that dinosaurs, like T. rex, had feathers. So if we did raise them for food, imagine plucking a dinosaur that big. One Tyrannosaur fossil had feathers that measured an incredible 1 m (39 in) long. So, it would be a little different than plucking a chicken. But before we get too carried away, we'd better say that bringing back dinosaurs is not very likely. And, if we were to do it, there would be other consequences. And maybe some that we couldn't handle. Just like in Jurassic Park, things could get out of hand pretty quickly. But, if you think about it, we're already eating dinosaurs. Or at least their very distant relative, the chicken. They might be smaller, but they sure taste good. Now, have you ever thought about what it would be like if you lost your sense of taste? That's a horrible thought and that's also a story for another What If.