Tissues can be a decent source of DNA evidence, the New York Times' Claiborne Ray writes in response to a reader question.

Manuals about collecting DNA evidence say that facial tissues "can be a very good place to look for cells with human DNA, whether they are in mucus, blood, sweat, semen, or ear wax."

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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.