Hotter temperatures lead to higher energy bills and a larger draw on the utilities and greater production of pollution from coal, oil, and natural gas fired power plants.

城市温度过高，使得能耗的费用越来越昂贵，同时也加大了电力公司的负担。因此，发电厂不得不更多地燃烧煤炭，石油和天然气来产生电能，污染物也随之产生。

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The energy in coal and oil came from the sun, stored there by the plants of millions of years ago.

煤和石油内部的能量来源于太阳，这些煤和石油在数百万年前由植物堆积而成。

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Boehlert and others say that even if wave energy has some local environmental impacts, it would likely be far less harmful than coal - and oil-fired power plants.

Boehlert和其他人认为，即使波浪能源对局部环境有影响，它应该比用煤、石油为燃料的电厂危害小很多。

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Plenty of studies show we can run the economy on clean energy and shut down our coal, oil, nuclear and gas plants in the lifetime of the existing stock.

FORBES: Why POTUS should say no to Keystone

Any policy to reduce heat-trapping pollution will inevitably target the main sources of Americans' energy: the coal burned by power plants for electricity and the oil that is refined to run automobiles.

NPR: PROMISES, PROMISES: Climate Change

Corn is indeed a renewable resource, but it has a far lower yield relative to the energy used to produce it than either biodiesel (such as soybean oil) or ethanol from other plants.

FORBES: Feds Could Lessen Drought Impacts But Don't Bet The Farm On It