Can Ethanol Replace Gasoline? Should it?
Global warming getting worse. Petroleum growing scarce. Should we start making biofuels bigtime? If so, does corn ethanol make much sense? Why not get energy from the cellulose in plant wastes?
View ArticleNew plug-in hybrid claims 640 miles per tank
Plug-in hybrids mean more than just extra spending cash for drivers, though. They could offer a new path through the maze of the electric grid, and help to boost the use of alternative energy.
View ArticleNew concern as ocean grows more acidic
Each hour, the ocean dissolves 1 million tons of carbon dioxide from burning fossil fuel. As the water grows more acidic, sound travels further. What will happen to marine mammals, which rely on an...
View ArticleTar 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 good idea?
View ArticleBuried charcoal: Global warming star?
Buried charcoal stimulates microbes and plant growth, helping farmers on poor soil. Studies show that charcoal is stable for hundreds of years.
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Greenhouse gas maps
Counting warming at the local scale What’s making greenhouse gas pollution in your city? Until now, that’s been a gnarly problem: measurement aircraft — even scientific drones — are expensive, and a...
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A new iron age?
Iron and steel: The billion-ton business We may call this the age of information, but we could also call it the age of steel. More than 1.5 billion tons of steel are made each year for bridges,...
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