Recently, the mayors of Paris, Athens, Madrid and Mexico City signed an "Air Quality Declaration" at the C40 Mayors Summit in Mexico City, pledging to ban diesel vehicles from their city roads by 2025 to reduce air pollution caused by exhaust emissions. At the C40 meeting, the four mayors also promised to encourage the use of pure electric vehicles, hydrogen fuel vehicles and hybrid vehicles in the future. In the past, the EU's automobile emission standards were biased towards carbon dioxide emissions, and the characteristics of diesel engines just bypassed this standard, making diesel cars highly praised. However, after the Volkswagen emissions scandal, issues such as nitrogen oxides and inhalable particulate matter emitted by diesel engines have returned to the public's attention. Therefore, the mayors of the four countries that signed the agreement also complied with the needs of development, and British athletes also called on the mayor of London to respond to this call. As environmental protection is increasingly valued, every country encourages people to travel in an environmentally friendly way. After all, we all live under the same sky, and environmental protection is closely related to everyone. In fact, as early as 2012, the World Health Organization's Cancer Research Center (IARC) upgraded diesel exhaust from "possibly carcinogenic" to "definitely carcinogenic". The content of inhalable particulate matter in diesel vehicles is much higher than that in gasoline vehicles, so it is necessary to improve diesel engines and gradually reduce their use. As a winner of Toutiao's Qingyun Plan and Baijiahao's Bai+ Plan, the 2019 Baidu Digital Author of the Year, the Baijiahao's Most Popular Author in the Technology Field, the 2019 Sogou Technology and Culture Author, and the 2021 Baijiahao Quarterly Influential Creator, he has won many awards, including the 2013 Sohu Best Industry Media Person, the 2015 China New Media Entrepreneurship Competition Beijing Third Place, the 2015 Guangmang Experience Award, the 2015 China New Media Entrepreneurship Competition Finals Third Place, and the 2018 Baidu Dynamic Annual Powerful Celebrity. |
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