How do you sex a Stegosaurus? Look at its back plates.

The origins of standardized tests.

There's been a long history of research on vitamin supplements and their potential cancer risk.

Origins of the North American fur trade.

Would advanced reproductive technology advance professional opportunities for women? Early feminist thinkers debate.

What do education leaders mean by "efficient" schools?

Where does the sound of cracking knuckles come from, and is it dangerous?

Attitudes toward birth control in 18th century France.

While Father Junípero Serra may earn posthumous canonization this fall, his statue in D.C. may be getting the boot.

How the Lusitania Effect impacted German-American relations in pre-World War I German.