confidently predict that people will still be having sex in 20 to 40 years’ time, but they will be using sex to conceive their babies much less often. Two biomedical advances are going to change how humans reproduce: whole genome sequencing and stem cell technology.

For over 25 years now, some babies have been born after something called pre-implantation genetic diagnosis (PGD). Three- to five-day-old embryos have some of their cells removed and subjected to genetic testing. Parents and doctors then decide, based on the test results, which embryos to transfer into the womb in the hope of making a baby. Last year 3,000 to 4,000 babies were born in the US after PGD without any obvious safety problems. FULL REPORT