EnvironmentApril 10, 2013
Turn Up the Juice: New Flywheel Raises Hopes for Energy Storage Breakthrough
Storing electricity in spinning wheels isn't new, but a new design may make it cheap enough to compete with other technologies
Stories by Chris Nelder
EnvironmentOctober 22, 2012
Rising Energy Costs May Usher in U.S. Freight Rail Revival
Rail built America in the 19th century and now it may be poised for a massive resurgence in the 21st century as high fuel prices make it competitive again