If I had to explain Twitter to someone for the first time, I would say that it s an addicting social news feed of my friends status or commentary. It s micro-blogging. Pushing out a tweet to 10 or 10,000 people is as easy as sending a text message. But there is a new piece of open source software that allows you to build your own Twitter. Laconi.ca, an open microblogging tool implements the OpenMicroBlogging protocol. The system supports OpenID, uses Jabber to send update, and has an expanding API. Building a global open messaging system for your brand or organization is now a piece of cake. Podcaster Leo Laporte has setup a network for his audience called TwiT Army: Laporte is...

New drug research suggests that teens may get addicted and relapse more easily than adults because developing brains are more powerfully motivated by drug-related cues. This conclusion has been reached by researchers who found that adolescent rats given cocaine -- a powerfully addicting stimulant -- were more likely than adults to prefer the place where they got it.

New drug research suggests that teens may get addicted and relapse more easily than adults because developing brains are more powerfully motivated by drug-related cues. This conclusion has been reached by researchers who found that adolescent rats given cocaine -- a powerfully addicting stimulant -- were more likely than adults to prefer the place where they got it.

New drug research suggests that teens may get addicted and relapse more easily than adults because developing brains are more powerfully motivated by drug-related cues. This conclusion has been reached by researchers who found that adolescent rats given cocaine -- a powerfully addicting stimulant -- were more likely than adults to prefer the place where they got it.

One in eight US adults smokes a pack of cigarettes each day. Nicotine is the addicting substance in cigarettes. Most of the risk for habitual heavy smoking is genetic. DNA samples from 14,000 people were studied to determine what DNA variants predict risk for habitual smoking. The most important genetic predictors of habitual smoking were variants in genes producing brain proteins to which nicotine binds in the process of generating its addicting effects.

One in eight US adults smokes a pack of cigarettes each day. Nicotine is the addicting substance in cigarettes. Most of the risk for habitual heavy smoking is genetic. DNA samples from 14,000 people were studied to determine what DNA variants predict risk for habitual smoking. The most important genetic predictors of habitual smoking were variants in genes producing brain proteins to which nicotine binds in the process of generating its addicting effects.