The British government is looking into a proposal to have volcanos generate power to homes within a decade. The geothermal energy would be piped to Britain through the world's longest seabed power cable from Icelandic volcanoes. Experts say this would be no more expensive than the next generation of nuclear energy.
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Global carbon dioxide (CO2) emissions in 2011 rose 2.5 percent to 34 billion tonnes, a new record, Germany's renewable energy institute has reported.
If the current trend is sustained, worldwide CO2 emissions will go up by another 20 percent to over 40 billion tonnes by 2020.
China led the table of emitters in 2011 with 8.9 billion tonnes, up from 8.3 billion a year earlier. Its CO2 output was 50 percent more than the 6 billion tonnes in the United States.
India was third, ahead of Russia, Japan and Germany.
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