Someday people will travel to the planets and later to the stars. Doing so will require bodily capabilities we do not now have, and perhaps cannot imagine in their entirety.
RealClearScience has a link to the thinking of someone currently working on identifying and then solving these problems at the genetic level. Honestly it reads like science fiction ... but isn't.
If even 10% of the promise this work seeks to undertake is successful, our grandchildren will look back and wonder how we survived the terrible risks deemed natural in our era and the recent past. Full disclosure: I wonder that about my grandparents now.
