Imagine walking through a steamy, ancient rainforest. The air is thick with humidity, the trees tower above, and somewhere ...

The Titanoboa went extinct around 50 million years ago, but what might life be like now if this gargantuan beast still roamed the Amazon?

The crocs and the turtles undoubtedly ate fish, but Titanoboa was at the top of the food chain. It could eat fish, but it could also eat the crocs and turtles. “Some snakes—especially ...