When Governor Davis signed a bill this week authorizing stem cell research in California，he set the stage for possible conflict with the federal government.Behind this polarized controversy，too often，
Adolescence is supposed to be full of ups and downs.But when the downs become persistent and obvious，it may signal a more serious psychological condition.Between 6% ~ 8% of American teenagers suffer f
Many critics of the current welfare system argue that existing welfare regulations lead to family instability.They believe that those regulations，which exclude most poor husband-and-wife families from
The income-tax deadline approaches and some taxpayers‘thoughts turn to it.Test time approaches and some students’thoughts turn to it.Temptation appears and some spouses consider it.Nowadays，cheating i
In this week’s Nature， a group of zoologists led by Andrew Whiten of the University of St Andrews in Scotland and Christophe Boesch of the Max Planck Institute for Evolutionary Anthropology in Leipzig
Hidden valley looks a lot like the dozens of other camps that dot the woods of central Maine. There’s a lake， some soccer fields and horses. But the campers make the difference. They’re all American p
Hauling yourself up by the bootstraps has never been easy. But computers do this every time they are turned on-hence the verb “to boot”。 Booting a computer takes valuable time， compounded by the reboo
Carly Fiorina， Hewlett-Packard’s chief executive， came out fighting on November 14th. In a conference call with analysts， she announced better-than-expected quarterly results， even though profits were
Many people think that information technology and biotechnology will rule the 21st century. Robert Birge， a chemist at the University of Connecticut， is trying to combine them， by making computer memo
Bragging about your fancy new cell phone is a fleeting pleasure; after all， today’s coolest models tend to be next month’s paperweights. By contrast， the half-life of a cordless phone for the home is