Since Darwin revolutionized science, his idea of competition between species to survive has become second nature. However, these days, this vision needs more nuanced. Mutual aid also occurs naturally in ecosystems! On the sea floor, beneath the surface of the earth and on top of it, living beings survive far better when they cooperate rather than compete. This revelation prompts us to reconsider altruism. This is a book about "inspiring portraits" of animals, plants, and human beings who have created harmonious communities and launched social and scientific initiatives ‒ life-altering choices that demonstrate the virtues of living together for a better planet.