Feathers are marvels of evolutionary engineering that have been studied for centuries, but in the past few years, scientists have made big discoveries about their evolution, structure, and function.
Physicists have made progress in measuring the strong force, discovering that it becomes constant at a specific distance between particles, shedding light on the force binding most of the matter in the universe.
Children acquire a sense of justice early on, but this moral development may conflict with their sense of belonging. They can easily adopt group identities like race and gender. Psychologist Melanie Killen's research explores children's morality and prejudice, leading to programs promoting empathy and inclusivity.
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