1. Humans

As seen on TV, humans murder each other quite a bit. While Western crime shows are certainly exaggerating, researchers have found that humans murder about 437,000 other humans each year. But if you add war deaths to this, the total goes up: around 135,000 deaths in 2017 were from war. Of course, this number changes a lot year to year, depending on who’s decided to battle it out.

However, murder and war aren’t the only ways people kill each other. Over a million people die from road traffic each year. China and India have the most traffic-related deaths, at over 200,000 each. In the US, it’s around 35,000 deaths per year. We really are our own worst enemy.