Active or Idle. Are we born or are we made? In the final part of the latest update following 25 babies bom at the start of the 21st century, Professor Robert Winston examines what happens when children don't get the training they need and asks whether having lots of energy is always a good thing. Series producer Tessa Livingstone ; Executive producer Sarah Hargreaves
www.bbc.co.uk/science Bathtime bonding: page 33