Egg freezing is often described as a way of preserving fertility. However, once the procedure is complete and the eggs are safely stored, many women b.

In human cells, DNA carries chemical or "epigenetic" marks that decide how genes will be used in different tissues. Yet in a ...

Learn more about why the human population seems to be in decline and what that could mean for the future.

Alas, there are no homunculi crammed inside the smallest human cells. Yet recent research in fertility and urology suggests Hartsoeker’s image could work metaphorically: Sperm can be a proxy for the ...

Judge says people should not lose chance of parenthood ‘by the ticking of a clock’ after 10-year deadline missed ...