“碳足迹”到底是什么意思？你知道吗？

21世纪是一个环保的世纪，全球人类都把目光转向了环境保护的行列之中碳足迹计算器，联合国气候变化峰会也就环境保护方面做了全面的调研：温室气体排放，碳足迹碳足迹计算器，以及节能减排的讨论成为了会议的重点话题。有关专业机构还设计出一个碳足迹计算器，让每个人都了解自己的行为对环境造成的影响。那么，这个“碳足迹”到底是什么意思呢？通过下面的介绍，你就可以有个了解了。

A carbon footprint is the total amount of greenhouse gases produced to directly and indirectly support human activities, usually expressed in equivalent tons of carbon dioxide (CO2). In other words: When you drive a car, the engine burns fuel which creates a certain amount of CO2, depending on its fuel consumption and the driving distance. When you buy food and goods, the production of the food and goods also emitted some quantities of CO2. Even if you heat your house with electricity, the generation of the electrical power may also have emitted a certain amount of CO2.