A new iron age?

A new iron age?

Smelters refine aluminum ore, but not iron ore, with electricity. A new electrolytic process for refining iron ore could save vast More »

Greenhouse gas maps

Greenhouse gas maps

Using at least 20 sources of data, scientists have modeled releases of carbon dioxide from Indianapolis. The new view will help cities More »

Wave power

Wave power

The first ocean wave energy-capturing device with a permit to connect back to a public power grid will enter the Pacific next month. More »

Nuclear nightmare in Japan

Nuclear nightmare in Japan

With three nuclear reactors and three pools of spent fuel teetering on the edge of meltdown, Japanese technicians struggled to throttle More »

Biofuel advance

Biofuel advance
Ethanol in gasoline now comes mainly from corn, a food crop. Cellulose, found in crop wastes, wood and switchgrass, could be a great More »

Future grid, smart grid

Future grid, smart grid
We need more electricity. More alternative energy. Less greenhouse warming, and better ways to manage our power supply. More »

Tar sands = Clean oil?

Tar sands = Clean oil?

Canada’s oil-drenched sands are the second-largest oil reserves, but they pollute air and water, destroy forests and boost warming. A More »

Mercury Pollution: How to Respond

Mercury Pollution: How to Respond

How should we deal with mercury air pollution in air, fish and water? Why do the studies of mercury consumption not agree? More »