Bill McKibben

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A Factory Interior, watercolor, pen and gray ink, graphite, and white goache on wove paper by unknown artist, c. 1871-91; in the Yale Center for British Art. Industrial Revolution England

Inventors and Inventions of the Industrial Revolution

Hindu Holi Festival celebrations with colored water, powder and colorful flower petals thrown over celebrants at a Hindu temple in Mathura, Uttar Pradesh, India on March 24, 2021.

Holi: Festival of Colors

Space race (1957-1969) infographic between United States (U.S.) and Russia. America, Soviet Union, U.S.S.R., space exploration

Timeline of the Space Race, 1957–69

Aphrodite. Greek mythology. Sculpture. Aphrodite is the Greek goddess of love and beauty.

12 Greek Gods and Goddesses

Calendar showing the month of February

Why Are There Only 28 Days in February?

Lead image for "A Timeline of the World in 8 Maps"

A Timeline of the World in 8 Maps

Ruminant. Deer. Red deer. Cervus elaphus. Buck. Stag. Antlers.

9 of the World’s Deadliest Mammals

Bill McKibben

environmentalist

Learn about this topic in these articles:

essay on environmentalism

In Humility—How to Save the Planet
…to take on the challenges of our time.
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