At the Extreme

Researchers at Stanford University and elsewhere are testing the cardiovascular efficiency of hundreds of top athletes, the Mercury News reports. The Exercise at the Limit: Inherited Traits of Endurance project team is looking for individuals who have extremely efficient cardiovascular systems and then plans to sequence them to find genetic mutations linked to that ability.

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In a statement, National Institutes of Health Director Francis Collins says sexual harassment is "morally indefensible" and "unacceptable."

Octopuses might owe their intelligence to their liberal alterations to their genes, Cosmos reports.

Stat News and ProPublica report that African Americans are underrepresented in cancer clinical trials.

In Cell this week: genomic analysis of abdominal aortic aneurysm, effect of probiotics on the microbiome, and more.