A mind-altering parasite that can make rats suicidally attracted to cat pee may also make people more likely to start a new business, according to new findings. The scientists say that their results reveal how parasites could help shape the global economy.

The parasite Toxoplasma gondii infects more than 2 billion people — that is, more than a quarter of the world population. The protozoans can live in many warm-blooded creatures, where they reproducing asexually, but they ultimately want