In whippets, a type of racing dog, a single copy of a mutated gene for myostatin helps them be the fastest sprinters on the track, report researchers led by Elaine Ostrander from the National Human Genome Research Institute. But having two copies of this MSTN fast-twitch muscle gene doesn't make them doubly fast.

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New results from the NASA Twins Study indicate that the immune system may rev up when in space, the Washington Post reports.

Kelvin Droegemeier, the new science advisor, spoke at the American Association for the Advancement of Science meeting, Geekwire reports.

In PNAS this week: whole-genome assembly for the white shark, paper-based microfluidic method for detecting the malaria parasite, and more.

The World Health Organization has announced the members of its gene-editing committee, according to NPR.