http://blogs.discovermagazine.com/d-brief/2017/06/13/flatworm-grows-head-space/#.WUKTz5DyuM_
Link to the paper
Grow a head out of my ass if old
Link to the paper
This behavior has been observed before in the species, but it's exceedingly rare — the Tufts researchers say they've never seen it happen before, even after 18 years of working with a colony that now contains over 15,000 flatworms. Even more intriguing, the mutant flatworm kept on making two-headed copies of itself as it further divided, indicating that it wasn't a freak mutation but a true change in the invertebrates' physiological makeup.
We already know that astronauts experience significant physical changes when in space: bones and muscles atrophy, eyesight can falter, blood thins and the sense of taste is diminished. Long-term issues could include vision impairment, heart disease and more, although further study is still needed. Ongoing tests of astronaut Scott Kelly, who spent nearly a year in space, and his twin brother who remained on Earth could reveal additional long-term effects of space travel.
Grow a head out of my ass if old