Which Ray?: Conflicting Data on High-Energy Cosmic Rays Leave Their Source--or Sources--Unresolved
A new study proposes that ultrahigh-energy particles from space may have violent local origins, but not all observations are in agreement
High-Pressure Hybrids: Fuel-Efficient Hydraulic Vehicles Come of Age
Once relegated to the sidelines due to bulky components and complicated controls, these systems are benefiting from lightweight materials and ecofriendly fluid formulas
Harvesting Waste Heat Could Boost Photovoltaic Power
Scientists at Stanford University claim a "breakthrough" that could harness energy lost as heat in solar cells
Former Soviet State Incubating High-Tech Businesses at Former Nuclear Weapons Site [Slide Show]
A complex of laboratories and data centers under construction in Kazakhstan is attracting tech entrepreneurs and, more importantly, the money to deliver the goods
Carbon Nanotubes Boost Power of Lithium Battery
A new battery demonstrated a power output 10 times higher, for its size, than what is expected of a conventional rechargeable lithium battery
Stringing Offshore Turbines for Uninterrupted Power
Sugar Within Human Bodies Could Power Future Artificial Organs
A new approach to tiny fuel cells implanted in rats enables the devices to generate electricity for months using sugar in the rodents' bodies
Going with the Flow: Hydrokinetic Power Developers Face Technical and Regulatory Hurdles in Bid to Tap Tides
Several organizations are hard at work developing and testing tidal-harnessing technology as a source of green energy
Germany Floats New Plans to Keep Hydrogen-Powered Cars in the World's Transportation Mix
The German government has big goals for vehicles running on hydrogen fuel cells. But can their model translate to the U.S. market?
Photovoltaic Breakthroughs Brighten Outlook for Cheap Solar Power
Novel materials might make harvesting sunlight for electricity affordable
Utility to Build First Power Plant with Greenhouse Gas Emissions Limits in California
The planned natural gas-fired power plant will be the first to accept federal restrictions on the amount of greenhouse gas it can emit
Obama Budget Increases Funding for Energy Research and Nuclear Power
The Obama administration would like to see more nuclear power plants, among other forms of new electricity generation