Whether at a birthday party in Brazil, a funeral in Kenya or protests in Hong Kong, humans all use variations of the same facial expressions in similar social contexts, such as smiles, frowns, grimaces and scowls, a new UC Berkeley study shows.

The findings, published today, Dec. 16, in the journal Nature, confirm the universality of human emotional expression across geographic and cultural boundaries at a time when nativism and populism are on the rise around the world.

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