Describes the social and religious conditions surrounding the Salem witch hunts, the extensive trials and executions, and the aftermath of the hysteria.

Profiles girls and women who participated in the American Revolution by refusing to buy British merchandise, collecting money, and even going to war as wives, nurses, spies, or soldiers.

Mitochondria are tiny structures located inside our cells that carry out the essential task of producing energy for the cell. They are found in all complex living things, and in that sense, they are fundamental for driving complex life on the planet. But there is much more to them than that. Mitochondria have their own DNA, with their own small collection of genes, separate from those in the cell nucleus. It is thought that they were once bacteria...