Crash Course
Crash Course History of Science #20: Earth Science
How did scientists figure out the age of the earth? Trace the history of Earth Science and the developments scientists made in determining the earth's geologic eras. Scientists asked such questions like, what's up with fossils? Are they...
Science Friday Initiative
Science Friday: Ancient Penguin
Researchers report the discovery of a fossilized penguin predecessor, minus the traditional black tuxedo. [7:55]