Fossil collectors in Florida have discovered an ancient sinkhole, now at the bottom of a river, which holds the remains of animals rarely seen in the state, including a type of giant armadillo, giant ...

Explore Ceres, the largest asteroid in our solar system, and discover its remarkable ancient ocean and ice-rich crust.

He became its vice president in that year and later, in 1923, its president ... Working with Meyer, Lemkau had developed a deep commitment to the view that mental disorders had a biological basis, and ...