Everyone hates mosquitos. Besides the annoying buzzing and biting, mosquito-borne diseases like malaria kill over a million people each year (plus horses, dogs and cats). And over the past 100 million years, they’ve gotten good at their job — sucking up to three times their weight in blood, totally undetected. So shouldn’t we just get rid of them? Rose Eveleth shares why scientists aren’t sure.

[Ted Ed]