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Biology8989 articles archived since 1845

Yawns Help the Brain Keep Its Cool

Theory has it yawning helps cool the brain—and it turns out animals with bigger brains do indeed tend to yawn longer. Christopher Intagliata reports.

October 18, 2016 — Christopher Intagliata

Why Do Autumn Leaves Change Color?

Scientific American editor Mark Fischetti explains how the leaves of deciduous trees perform their annual chameleon act, changing from various shades of green to hues of bronze, orange and brilliant red.

October 14, 2014

Flint's Water and Environmental Justice

The University of Michigan's Paul Mohai, a leading researcher of issues related to environmental justice, talked about the Flint water crisis at a workshop sponsored by the Institute for Journalism and Natural Resources, attended by Scientific American contributing editor Robin Lloyd. 

October 17, 2016 — Robin Lloyd and Steve Mirsky