The senator's proposed $300 million prize for an electric-car battery prompts excitement, skepticism.
Rain and floods in the corn-growing Midwest could drive up the costs of producing the biofuel.
A floating wind turbine is planned for 10 kilometers off Norway.
A 1.4 million gallon demonstration-scale plant will use waste biomass to make biofuel.
A cheap polymer material increases the power output of methanol fuel cells by 50 percent.
High prices still haven't prompted companies to use advanced extraction methods.
A technology developed by IBM to cool computer chips could be a boon for solar energy.
A simple new process generates hydrogen for fuel cells.
A new membrane-free water-purification system uses small amounts of energy.
A city being built in Abu Dhabi will serve as a large-scale test for renewable energy.