Every year, tens of thousands of people around the world die from something as simple—and as terrifying—as a snakebite. In remote villages, jungles, and farms, help often comes too late, or not at all.

A cocktail of 3 agents provides broad protection against 13 deadly snakes, but a ‘universal antivenom’ isn’t on the horizon yet

Scientists have created what they believe to be the most broadly effective antivenom to date — and its key ingredient came from a single man's blood. Both the researchers and the donor reveal how it all came together.