Electricity from coal is downright expensive compared to power from a new solar plant. ->
The goal is optimistic, but doable.
Good news and bad news for carbon pollution: Russia and Europe are leading successful reduction efforts, but the United States has shown an increase in carbon dioxide emissions.
The Kyoto Protocol is virtually dead. The UN is trying to revive talks about fighting climate change at a meeting in Qatar. Meanwhile coal burning and greenhouse gas emissions are steadily increasing. What will we do?
Underground microbes have been found converting waste CO2 and coal into natural gas. Left in the ground, the dirty fossil fuel might be transformed into a source of renewable energy.
Using ancient plant ashes, scientists reconstructed a history of Earth's atmospheric oxygen levels over the last 400 million years, and laid to rest some lingering doubts about mass extinctions.
Fiscal trouble can force people to consume less -- and leave a smaller environmental footprint. But concern for environmental issues also drops.
New underwater views of the Great Barrier Reef debut as activists fight to save it from a neighboring mega-mine.
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