This clip illustrates the working conditions in factories and describes how workers were overworked and underpaid. It also explains the tragedy that is the Triangle Shirtwaist Factory fire and the impact it had on America.

Researchers at Caltech are scaling structures down to the nanoscale in order to make lightweight but strong material.

Martin Luther King calls James Lawson to Nashville to organize and train volunteers for non-violent protests like sit-ins and dealing with the responses.

Sarah Harman and Minnie Stonestreet describe their change in fortunes in 1929, when the economy crashed caused by politics.

The nanoscale meaning billionth of a meter in scale is an area of research scientists are looking towards to learn about material structure and application in medicine and electronics.