@CNN: 7% of astronaut Scott Kelly’s genes did not return to normal after his return to Earth two years ago, according to preliminary results from NASA’s Twins Study https://t.co/0K8LTsCqBQ https://t.co/2dtIbKWxXO
7% of astronaut Scott Kelly's genes did not return to normal after his return to Earth two years ago, according to preliminary results from NASA's Twins Study https://t.co/0K8LTsCqBQ pic.twitter.com/2dtIbKWxXO
— CNN (@CNN) March 15, 2018