Without altering the total tax burden, Mr Gore thinks America should replace taxes on employment and production with taxes on pollution, particularly carbon dioxide.

戈尔认为，在不改变整体赋税负担的情况下，美国可以将雇用和生产上的课税转到污染物上，特别是二氧化碳。

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These are pollutants, particularly ozone and soot, that do not hang around in the atmosphere as carbon dioxide does.

这些污染物，尤其是臭氧和煤烟，不像二氧化碳那样悬浮在大气中。

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The next steps will involve further screening of natural algae to find strains that are particularly efficient at using energy from sunlight to convert carbon dioxide into oils.

今后的步骤将涉及对天然藻类进一步筛选，以找到那些在利用太阳能、将二氧化碳转化为油方面效率特别高的品种。

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Recent rises in surface temperature have been pinned on rising levels of greenhouse gases, particularly carbon dioxide.

ECONOMIST: Climate change (I)

Northern waters are able to absorb and hold more gases, particularly carbon dioxide, which is growing steadily in the Earth's atmosphere.

MSN: Oceans' Sad Future: A Sea of Small Fish

One of these changes, which would promote global warming, is a rise in the level of so-called greenhouse gases (particularly carbon dioxide) which trap heat from the sun and thus warm the air.

ECONOMIST: More evidence that global warming is man-made