With 55 percent of its residents cycling to their place of work or education each day, Copenhagen has succeeded in changing its transportation system--and improving quality of life along the way.
Best-case scenario: one-fifth of world's electricity will be generated by wind by 2030, with China making most of world's wind turbines.
President's statement hardens widespread verdict that the climate conference was a failure.
A new take on storing and boosting power, keeping track of nearby friends, and monitoring traffic, fitness, and fog has bike/health enthusiasts scratching their heads.
With international climate change talks a week away, the host city takes its tannenbaum off-grid with a rack of bicycles powering LED lights.
Document obtained by Reuters that lists U.S. questions to delegates from among the world's top emitters suggests they may have to go back to the drawing board.
The Copenhagen Wheel from startup Superpedestrian helps accelerate a cyclist going uphill, charging its battery with energy stored while braking and descending.
Florida Power & Light will link thousands of streetlights in a project geared to improve efficiency and help the utility fix problems sooner.
Internet-enabled traffic signals, streetlights, and natural gas meters are expensive to deploy. One company hopes selling the technology as a service will help its business.
Road Trip 2011: For CNET reporter Daniel Terdiman, taking trains all over Europe using a Eurail pass is both a reminder of great past travels and of the freedom and flexibility that the passes give those who carry them.