Newly discovered ancient apex predator had knife-sharp teeth and bone-crushing jaws

We can thank the Himalayan Mountains for that.

Northern Africa was a lush wooded area for lots of different types of animals and predators. The Himalayan mountains weren't having an effect until they rose higher and changed weather patterns. Less rain started to fall in northern Africa, the woods opened up to savanna and desert, less animals were around with fewer predators and our ape like ancestors had to leave the trees to walk further and further away. They figured out that standing up on two feet gave them a weird advantage of being able to see further while other animals were cautious of meeting an animal taller than them. And as soon as these apes freed up their hands, they started using them for other tasks. The more they used their hands the more complex their brains became.

All because a bunch of mountains changed the weather and got rid of a lot of predators that would have eaten our ancestors.