Ailments like heart disease and diabetes have become all too common since humans shifted from hunter-gatherers to desk jockeys over the millennia. Natural selection can’t keep pace with our cushy, sedentary lifestyles, and our cover story explores the health implications of human "dysevolution."
Plus we talk with scientists working to cure addiction by rewiring the brain, and we’ll take you into the operating room to show you how it works. And evidence deep beneath Arizona’s Painted Desert could rewrite long-held theories about dinosaur evolution.
You’ll also meet the bacteria that hitch rides on airplanes, get an unprecedented view of the seafloor, and learn about an ambitious plan to genetically modify a whole species of mosquito — all in this issue of Discover.