A proposed engine design approaches the efficiency of gas-electric hybrids, but could be far cheaper.
The world's critical energy problems require solutions beyond those that policymakers are exploring now.
A novel catalytic method could let you fill up your tank with coal-derived diesel, cutting U.S. dependence on foreign oil.
A biological template ramps up electrode performance and scales down size.
A new membrane makes fuel cells more powerful and less expensive to produce.
A test-rocket explosion notwithstanding, SpaceX is still forging ahead with a new, low-cost orbital rocket.
A new process using jet fuel made from coal could reduce oil dependence, and improve fuel performance in advanced aircraft.
Advances in methanol synthesis, coupled with improved fuel cell technology, could make it a viable alternative to gasoline.
A radical proposal for a high-tech power grid could make possible the continent's vast expansion of renewable energy sources.
Europeans are rethinking the merits of nuclear energy and whether to build new plants, says energy executive Lars Josefsson.