social change

The environmental protection NGO is founded in Vancouver, Canada.

The first “Earth Day” is celebrated in the US in 1970; by 1990 it is observed worldwide.

Publication of Rachel Carson’s book Silent Spring, a catalyst for environmental consciousness in the US and worldwide.

Early modern European voyages to the New World led to the globally transformative exchange of people, plants, ideas, and diseases.

Paul and Anne Ehrlich’s book The Population Bomb raises public awareness about overpopulation.