Monkeys checking each other for fleas on concrete fence in a park. pittawut / Shutterstock

People Aren't Altruistic. It's the Bacteria They Carry, Israeli Scientist Suggests

Do we help each other only because we're manipulated by bacteria? Evolutionary biologist Lilach Hadany says this explains the evolutionary riddle of altruism

One day, when my daughter was 3 years old, we went into a bookstore and came across Shel Silverstein’s “The Giving Tree” – which is called “The Generous Tree” in the Hebrew version. My daughter asked me what...

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