Biologists Think They Know How Mosquitoes First Got Their Thirst For Human Blood

It’s a warm summer’s evening, and you’re relaxing in your garden after a long day. That tranquility is soon disrupted, though, when you realize you’ve been bitten by a mosquito. Maybe you felt it pierce the skin and swatted it away; more likely, you never noticed it at all, and now your bite is starting to itch. Prior to that, you might not have thought about why these pesky insects crave human blood, but a research paper finally answered the question in July 2020.