Will humans ever evolve into something else? Science Short

0:00Welcome to Squizz Kids Science Shorts, the show where we take your big curly questions and unpack the science stories everyone's talking about. Break them down into snack size, science-powered answers, we sort the fact from the fluff, keep it fun, keep it fast, and whether it's happening in your body, your backyard, or the big wide universe, we're here to explain the science behind the headlines. What do you think humans will look like in the future, will we still look like, well, us? Or could your great, great, great, grandkids be something totally different? Today's question is, will humans ever evolve into something else? To answer that, we need to start with a big idea, evolution. Evolution is how living things change over many, many generations, not overnight, not only in one lifetime, but slowly as genetic changes build up over time.

1:02It's how giraffes got long-necks, how some bacteria became resistant to antibiotics, and even how some humans can drink milk and others can't. Thousands of years ago, most humans couldn't digest lactose, that's the sugar in milk, but in some populations a genetic change spread that allowed adults to drink milk without getting sick. That meant that they didn't have to kill the animal for food, they could keep it and milk it and get milk again and again and again. That's evolution, slow, practical, no one really in charge. But here's where things get interesting. Humans might be the first species that can actually interfere with evolution. Scientists now have tools like CRISPR, a kind of molecular scissors that can cut and edit the instructions for building you, DNA. Today, this is mostly used in very careful ways. For example, doctors can help prospective parents to screen for serious genetic diseases,

2:04helping families avoid passing on conditions, things like cystic fibrosis. That's allowed in countries like Australia. But choosing things like eye color, hair color, or intelligence, that is not allowed. Because that starts to move into something called eugenics. The idea that humans can be improved by deciding who should and who shouldn't exist. And history has shown us that that can go very wrong. In fact, in the early 1900s and especially in Nazi Germany, these ideas caused enormous harm and suffering. So today, there are strict rules around what scientists can and can't do, especially when it comes to editing genes that could be passed on to future generations. Because changing DNA might sound like it's fixing a problem, but that raises a bigger question who decides what a problem is. And here's another twist. We might not evolve through just our biology. We're already starting to merge with technology.

3:07People can control computers with their brains. Artificial organs can replace failing ones and scientists are exploring ways to connect human brains with AI. So maybe the future of humans isn't just about evolution. Maybe it's about an upgrade. But even then, evolution hasn't stopped. It's simply happening quietly in the background across generations. Just slower, subtler. So will humans ever evolve into something else? Maybe. But for the first time in Earth's history, we might get a say in what that something else becomes. Had fun? Follow the show! Drop us a five-star review and tell us what you want to know next. Leave your questions in the comments or email me at squizzkidsatthesquizz.com.au and you might just hear your answer right here on next week's Squizz Kids Science Shorts.