Remember when scientists cloned Dolly the sheep back in 1996 and everyone was like, "Woah, this science stuff is officially getting out of hand." If you thought that was freaky, just wait until you see what is in the near future for genetic engineering.
While we were all busy watching Netflix and playing Pokemon Go!, scientists have been hard at work researching, studying, and developing CRISPR, which stands for "clustered regularly interspaced short palindromic repeats." Let this video by Kurzgesagt explain exactly what that means. And don't worry, it uses cartoons, so it won't even feel like you're learning.
Basically, CRISPR can be the key to solving many of our problems: eliminating diseases, extending humans lives by decades, and even letting humans change their genetic makeup to be stronger, healthier, and more attractive. It also might cause many problems, like if the science fell into the wrong hands and someone started using CRISPR to create an army of genetically modified superhumans. But that's a risk we're willing to take, right?