New York Times Top Stories
Tickled Apes Reveal the Rhythmic Roots of Laughter
A study of chimps, gorillas and other great apes, including human children, sheds light on how laughter has evolved.
New York Times Top StoriesNew York Times Top StoriesNew York Times Top StoriesA study of chimps, gorillas and other great apes, including human children, sheds light on how laughter has evolved.