MindThe best parents don't try to score top marks Two books on bringing up children, Parentology by Dalton Conley and It's Complicated by Danah Boyd, warn us not to follow science's rules too slavishly CultureLab
LifeI'm breeding biodegradable batteries from viruses Biological engineer Angela Belcher is genetically modifying viruses to create batteries that can be recharged thousands of times and then decay harmlessly Opinion