Forgive us for missing this blog the last few weeks, but we’re back to report …

A Nobel prize-winning physicist says that graphene, the exotic material that won him the top science gong, could end up on touchscreen phones as early as next year. Last month, the Nobel prize in physics went to Andre Geim and Konstantin Novoselo, of Manchester University, for coming up with graphene, a one-atom-thick transparent sheet of carbon. Graphene is more conductive …

Geeks will always tell you to get the latest and greatest product on the market, but sometimes choosing a previous generation product will satisfy your needs without breaking the bank. In this week’s column I answer a question from a reader who needs a new iPhone and can’t decide whether to get the older-generation iPhone 3GS or the iPhone 4. …