25 Aug 2011:
On-Road Charging Could Allow
‘Unlimited’ EV Driving, Researchers Say
Japanese researchers are developing a new system that they say could ultimately power electric vehicles (EVs) for travel across “unlimited” distances
without the hindrance of heavy batteries. While based on railway infrastructure in which individual cars are powered through overhead wires, the new EV technology would convert energy from overhead power lines into radio frequencies and transmit these frequencies to a metal track embedded under the surface of the road. The prototype electric vehicle, being developed by Toyota Central R&D Labs and Toyohashi University of Technology, is able to convert this radio frequency to functional voltage through a circular steel belt installed inside the tires. The researchers have already demonstrated the feasibility of their design through low-power laboratory experiments and argue that achieving an energy transfer of tens of kilowatts would make possible unrestricted expressway driving for EVs.
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Yale Environment 360
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Tribal people and ranchers join together to stop a project that would haul coal across their Montana land. Watch the video.
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An aerial view of why Europe’s per capita carbon emissions are less than 50 percent of those in the U.S. View the photos.
Ugandan scientists monitor the impact of climate change on one of Africa’s most diverse forests and its extraordinary wildlife. Learn more.
video series looks at the staggering amount of food wasted in the U.S. – a problem with major human and environmental costs. Watch the video.
video goes onto the front lines with Colorado firefighters confronting deadly blazes fueled by a hotter, drier climate. Watch the video.
A three-part series Tainted Harvest
looks at the soil pollution crisis in China, the threat it poses to the food supply, and the complexity of any cleanup. Read the series.