News

Health & Medicine

Racial homogeneity in early childhood may affect brain

In lab study, kids who lived in single-race orphanages have difficulty interpreting emotions on faces with foreign features.

Psychology

Ratio for a good life exposed as ‘nonsense’

A heralded calculation of people’s ability to flourish is a mathematical mirage, researchers say.

Humans

DNA reveals details of the peopling of the Americas

Migrants came in three distinct waves that interbred once in the New World.

Earth

Emissions could fuel global warming for millennia

Climate simulation projects effects of greenhouse gases farther into the future than ever before.