The Lorax by Dr. Seuss

This is one of the most important books ever written. 
Seriously. 
Should be required reading for every human on the planet.

First published in 1971, this story is more relevant today than ever.

Not just a story about protecting nature, but also speaks to the dangers of human destruction of the environment while placing the responsibility to take personal care of, and responsibility for, the environment squarely on the shoulders of every human.

“Unless someone like you cares a whole awful lot, Nothing is going to get better. It's not.” 
― Dr. Seuss, The Lorax