At 28 weeks of pregnancy, your baby is practising life skills like blinking and switching between REM and non-REM sleep. During the third trimester, the foetus spends 90% of its time in a sleep state.

This week's science news was filled with awe-inspiring medical breakthroughs, including the story of a risky surgery that saved an unborn baby from a rare lung disorder at just 25 weeks gestation.

This week's science news was filled with awe-inspiring medical breakthroughs, including the story of a risky surgery that saved an unborn baby from a rare lung disorder at just 25 weeks gestation.