SciShow

Why Do Bug Bites Itch? (2014x34)

Ημερομηνία προβολής: Μαρ 04, 2014

Hank explores a vexing question asked at picnics and beach parties everywhere: Why do bug bites itch? To help you understand the answer, he takes you into the blow by blow of a bug bite which, we warn you, is pretty horrifying.