Millennia ago, when ancient people did not know what toothbrushes were, food particles and microbes clung stubbornly to their teeth. These plaques mineralized over time to form crusty, hard tartar.

The gut is the darling of human microbiome research. But with over 700 species of bacteria, the human mouth hosts the second largest and most diverse microbiome in the body. According to new research, ...

A genetic analysis of dozens of ancient skeletons from East Africa helps pin down the origins of coastal Swahili society. By Elie Dolgin A long history of mercantile trade along the eastern shores of ...