But the biggest change in Earth's energy budget by far over the past hundred years is due to the accumulation in our atmosphere of greenhouse gases, which limit the exit of heat into space.

但是，过去一百年至今，地球能量收支的最大变化起因于大气中温室气体的累积，是它限制了热量向太空释放。

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In every case, these ideas will save you money, cut energy use, and help balance your household's greenhouse gas budget -- the amount of carbon dioxide released into the atmosphere to produce goods or electrical power.

CNN: 10 first steps to greener living