Driving an electric car is good for the environment(环境). But is that true?
A University recently studied emissions (排放物) from different cars. The scientists found that sometimes electric cars were worse for the environment than other cars. Surprising Well, please pay attention to the word " sometimes". Electric cars should be clean. The problem lies in th power(动力). If the power comes from the wind or the sun, electric cars will be good far the environment But if the power is from coal(煤炭), it will bring a co ntrary situation. According to the study, emission from these electric cars kill about 3,000 people a year. Compared with it, emissions from other cars makes about 880 people's death a year.
In France, more than half of the power comes from nuclear(原子核的) stations. Electric cars there should be as clean as they can be. But in many other countries, coal is still the main source(来源) of electricity. India, for example, needs coal for 61% of its power. Only 2% of its electricity comes from nuclear sources. In countries like India, electric cars are not clean at all!
All in all, sellers are not lying(说谎) when they say electric cars are clean, but they are right only when the power is also clean.