Clark spends three weeks at Big Bone Lick in America's first organized vertebra paleontology expedition. He uncovers a significant cache of bones of creatures presumably drawn to the area by a salt lick.
Charles R. Knight (1874-1953) was one of the first American painters to depict dinosaurs, providing imaginative and largely scientifically based renditions of the extinct beasts in real-world settings.Â
Othniel Charles Marsh and Edward Drinker Cope, former friends turned competing paleontologists, began scouring the American West for prehistoric fossil deposits in the hopes of discovering unknown species from the past.
When American paleontologist O.C. Marsh identified the Equus parvulus (now Protohippus), many biologists considered the skeleton to be validation of Darwin's theory.
Eugenic beliefs had serious implications for Latinos in California, especially working-class Mexican-origin women and men, who were a growing population in the state in the first half of the 20th century.Â
With every new advance in prenatal genetic screening, the ability to prevent suffering has also sparked difficult questions. These fears arise, in part, because just 100 years ago, that’s exactly what the eugenics movement tried to do.
