Common air pollutants were associated with increases in emphysema over a decade of follow-up. The results may help explain why some people who never smoked develop emphysema.

Researchers gained key insights into brown fat’s effects on the body’s metabolism. The findings reveal targets for developing new treatments for obesity and diabetes.

Gene mutations related to human stuttering also caused vocalization defects and a loss of brain cells called astrocytes in mice. The findings reveal insight into the neurological mechanisms.