Helium isotopes reveal hidden stores of geothermal energy.
As the primaries near, the presidential candidates are calling for similar, ambitious growth in ethanol biofuel.
A microgenerator could power portable devices for troops.
Congress pushes for another look at thorium fuel, saying it could reduce the amount of high-level nuclear waste produced by reactors.
Researchers have designed a process to generate hydrogen from organic materials.
A metagenomic study could suggest ways to make cellulosic ethanol.
A new method for making ultrathin materials could lead to better fuel cells.
When the box turns red, it's time to turn off the air conditioner and save electricity.
Placing tiny spheres of silicon in reflective trays could be the key to cheap, efficient solar cells.
Startup Kior has developed a process for creating "biocrude" directly from biomass.