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Green cars in line for better batteries
Panelists expect lithium-ion to replace nickel-metal hydride
GM, utilities join to study electric car’s impact
Aim to look at issues that will crop up when GM rolls out the Chevy Volt
Scientists tap motion in the ocean for energy
Wave power, dolphin flukes and humpback whale fins among inspirations
2,400-mile car race runs on the sun
University teams showcase possibilities for solar power
Texas OKs lots more wind power
Already U.S. leader, state moves ahead on $5 billion transmission project
Hydrogen future doable, experts say
Best-case scenario: cars free from oil by 2050, and few carbon emissions
33,000 solar panels going atop warehouse
Calif. utility giant hopes to expand to 3.5 million panels on 150 rooftops
Technology could streamline solar power
'Solar concentrators' are more efficient, cost-effective than panels
More Green Machines news & features
Nissan plans electric cars in Portugal
Carmaker, government link up to form charging network
Sailor ends 4,800-mile wave-powered trip
Japanese innovator uses green technology to cross Pacific, raise awareness
Giant solar tower could power the future
Project could generate enough electricity for 200,000 homes
Schwarzenegger boosts electric cars
Tax break aims to keep companies like Tesla in California
LA gas station gets hydrogen fuel pump
Opening aims to increase awareness of traditional gas alternative
Solar dish may revolutionize energy production
Inventors: Dish is 'user-friendly, user-friendly, so anybody can build it'
Cellulosic ethanol farm gets started
Switchgrass planted, idea is to avoid fuel vs. food competition
Honda rolls out a new zero-emission car
FCX Clarity uses hydrogen, electricity; set for Hollywood debut
Calif. solar power test begins — in Israel
Developer: 'Highest performance, lowest cost thermal solar system'
Wind farms spread footprint in U.S
McCain and Obama back turbine power, but industry says it still needs help
Toyota unveils longer-range fuel cell vehicle
Car can travel more than twice the distance of predecessor
Utilities work on storing wind energy
Experts try to improve on two underground vaults that use compressed air
Neil Young is driven by electric car
'59 Continental to become showcase for shift away from petroleum
Europe invests in fuel cell, hydrogen cars
Project with industry aims to bring them to market by 2020
Sanyo, VW to develop hybrid batteries
Lithium-ion strategy comes as VW works on diesel-electric Golf
Natural gas cars cheaper at the pump
Fleets use cheaper, cleaner fuel, but only Honda makes consumer model
First floating wind turbine in works
Offshore rig expertise being used in $80 million pilot project
Honda hybrids may be nightmare for Detroit
New entries into market coming at a time when U.S. favoring smaller cars
Drivers in no rush to buy big, hybrid SUVs
Analysts: Car shoppers could shun pricey full-size Tahoe, Yukon

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“Do you really know who people are?” That’s the slogan for pay site People Search's freshly launched (and totally free!) companion site, CriminalSearches.com.

Interactive
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Interactive
Hybrids: Sales of gas-electric models like the Prius will triple by the end of the decade. But high prices will keep them from going mainstream.
Hybrid payback?
Want to buy a hybrid, but concerned about the cost? Check out these models and comparisons.
Interactive
IMAGE: 2006 Honda Civic GX
Greenest and meanest vehicles
2007 vehicle models by their “green scores.”
Video
  Power blowin' in the wind
April 21: NBC's Anne Thompson reports from Horse Hollow in West Texas, the world's largest wind farm.

Today show

NBC video
Green power in the high desert
Aug. 11: Amid all the talk of alternative sources of energy, one site in California's Mojave desert is already getting a head start. NBC's Martin Fletcher reports.

Nightly News

Slide show
  Green wheels
Take a look at some slightly unusual “green wheels.”

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