Genetic mutations that made ancient people shorter and more prone to osteoarthritis may have also helped them endure an ice age, the New York Times reports.

"There are many cases like this where evolution is a trade-off," study author and Stanford University researcher David Kingsley tells the Times.

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NPR reports that Turkish high school students will no longer study evolution.

Researchers report they sequenced and identified plant species in an "al fresco" laboratory.

An Australian team searches for genetic alterations linked to depression in hopes of developing personalized treatments, the Sydney Morning Herald reports.

In PNAS this week: host contributors to typhoid fever risk, effects of obesity-related variants near TMEM18, and more.