Nathan E Botts / Friday, February 3, 2017 / Categories: Genetics Astronaut Twins Give Clues to Health Hazards of Spaceflight NASA researchers compare biological differences between Scott and Mark Kelly Source: HealthDayLink to original article Previous Article Gene Discoveries Offer New Height Insights Next Article Geneticists Get to The Roots of Hair Loss in Men Print 1737 Rate this article: No rating 0Upvote 0Downvote Please login or register to post comments.