This Week in Science

In Science this week, a Harvard-led group reports on the use of the genome-editing technology CRISPR to record DNA events in bacteria. CRISPR is known to "record" past viral infections by storing spacers — short stretches of viral DNA — in the genome. The researchers show that these spacers are added in sequence, essentially creating a timeline of when spacers are added relative to each other.

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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.