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...behavior. We wanted to conduct a meta-study, a comprehensive look at all different aspects of the way media affects children. And the bottom line is that it can have a significant impact in the areas we looked at: childhood obesity, tobacco use, sexual behavior, drug use, alcohol use, low academic achievement and ADHD. [Lead researcher] Dr. Ezekiel Emanuel and his team looked at thousands of studies, and then picked the 173 best. In the areas that were graded high-obesity, drug use and sexual behavior-it was clear that media was a contributing factor to negative outcomes in those...
Going Underground Ten minutes up the road from Jonasson's bread ovens, over some low hills, a series of dense white steam plumes rise into the cloudy sky. In a flannel shirt and hard hat, Birkir Fanndal maneuvers his truck over one of the dirt roads that crisscross Iceland's first major geothermal power station, Krafla. Soon after the inaugural borehole was drilled here 34 years ago, the first in a series of volcanic eruptions rocked the area. The eruptions, nine in all, went on for nearly a decade, sending engineers scrambling to keep up with the shifting earth. Fanndal...
...engineers have learned which temperature enables underground liquids to power a turbine, how to manage a boiling cavern's chemistry, and how to keep power plants sustainable by "resting" boreholes to give the source time to replenish its heat. While the ongoing costs of a geothermal power plant are low - Krafla, for example, has only 15 full-time employees - the start-up technology needed to extract heat from a few miles beneath the earth's surface and convert it to electricity is not cheap. By some estimates, conducting the necessary geologic surveys and exploratory drilling for one plant can take...
Geothermal has its share of critics. The power plants release low levels of carbon dioxide, nitric oxide and sulfur, and some people worry that drilling holes deep into the earth destabilizes the land around it. This summer, police arrested a group of environmental activists who had chained themselves to machinery at a drill site near the nation's largest power station outside Reykjavik to protest the plans for a new aluminum factory. Iceland's government has responded to such criticisms by trying to diversify and attract companies like Microsoft, Cisco and Yahoo!, all of which have discussed building massive server...
...including heavyweights Osram and GE. "The industry has been extremely proactive," says Russill of the Energy Saving Trust. Philips is making some of the biggest bets. Over the past two years, it has spent more than $4 billion on acquisitions aimed at positioning itself as a leader in digital, low-energy lighting. The plant outside Antwerp belonged to the consumer-lighting market leader Partners in Lighting, which Philips bought in 2006. The company followed that purchase a year later with the $2.7 billion acquisition of Genlyte, a big U.S. player that makes lights for offices, highways, factories and outdoor advertising...