from BLISS the premature baby charity
Babies born at 23 weeks have a 17 per cent chance of survival |
Babies born at 24 weeks have a 39 per cent chance of survival
Babies born at 25 weeks have a 50 per cent chance of survival
Twenty years ago, approx 20% of babies weighing less than 1,000gms (2lb 2oz) at birth survived. Nowadays, about 80% survive.
I don't know about life, but survival seems to begin around the 3rd trimester (24 weeks).