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(a) The mandible from Sima de Elefante Atapuerca, Spain. (b) The Gran Dolina locality in Atapuerca,
Early claims of relieving headaches with Bromo-Seltzer
Polyps, or abnormal growths, on the lining of the large intestine may indicate early stages of colon
Teens who date in early adoles-cence are more likely to become sexually active
A pedigree for albinism collected in the early years of the twentieth century by Charles Davenport,
Early stages of embryonic development in Drosophila