On the third day after fertilisation a human embryo is made of six to 12 roughly identical cells; on day four its cells appear to fuse into a mostly uniform blob; and on day five it puffs out to ...
A new international study warns that reproductive health in space is no longer a theoretical concern and that questions about fertility and pregnancy should be pressing concerns. As commercial ...
A new study warns that reproductive health in space is becoming an “urgently practical” issue as missions extend beyond Earth. Researchers cite major gaps in evidence, ethics and governance.
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