Scientific American, September 2017. Reproduced with permission.Graphic by Pitch Interactive and Amanda Montañez. SOURCE: Research by Amanda Hobbs; Expert review by Amy Wisniewski University of Oklahoma Health Sciences Center

Scientific American, September 2017. Reproduced with permission.

Graphic by Pitch Interactive and Amanda Montañez. SOURCE: Research by Amanda Hobbs; Expert review by Amy Wisniewski University of Oklahoma Health Sciences Center