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Psychologist Paul Bloom on why chatbots make good companions. And why they don't.

These word games spell out canines’ surprising cognitive powers

Some scientists want to create a biological Bizarro World—is it safe?

A new book explores what drives the brain’s sometimes insatiable quest for vengeance

An aging Earth, like an aging body, is increasingly vulnerable to heat’s fatal strikes

How we adapt is shifting

One little appendage may have played a very large part

A singular quality unifies favorites

Other cultures across Asia were preserving their dead for millennia before the Egyptians

Their extinction left an indelible mark on the landscape

Michael Gurven on the 3 greatest revelations he had while writing Seven Decades: How We Evolved to Live Longer

See original manuscripts, letters, photos, and jokes from luminaries like Rosalind Franklin, Aaron Klug, and Linus Pauling