a55555.net彩票网www.a55555.net)是澳洲幸运5彩票官方网站,开放澳洲幸运5彩票会员开户、澳洲幸运5彩票代理开户、澳洲幸运5彩票线上投注、澳洲幸运5实时开奖等服务的平台。

,Declining levels: Smoke and steam rise from a coal processing plant in Shanxi Province. A report says the amount of harmful air particulates in China fell 40% from 2013 to 2020, almost equalling a 44% drop in the United States over 30 years from 1970. — AP

BEIJING: China has reduced air pollution nearly as much in seven years as the United States did in three decades, helping to bring down average global smog levels.

The amount of harmful particulates in the air in China fell 40% from 2013 to 2020, according to the University of Chicago’s Energy Policy Institute, which would add about two years to average life expectancy if sustained.

While smog in large swathes of the country still significantly exceeds safe levels, its experience shows how quickly progress can be made, researchers, including Prof Michael Greenstone, said in a report published yesterday.

About 97% of the world’s population live in areas where air quality is usually worse than World Health Organisation (WHO) guidelines, according to the researchers.

Smog reduces global life expectancy more than cigarette smoking, alcohol or poor sanitation, they said.

“China’s success in reducing pollution is a strong indication of the opportunities that could lie ahead for other nations if they were to impose strong pollution policies, as some are beginning to do,” they said.

The United States and Europe, which have been battling pollution for decades and account for 4.1% of the global health burden from airborne particulates, more than 90% of people live in areas that don’t meet the WHO guidelines, which were tightened last year.

China’s success, led by restrictions on car use and coal burning in major cities, has been rapid, with its 40% decline in seven years nearly equalling a 44% drop in US pollution over 30 years from 1970, after the landmark Clean Air Act was passed, the researchers said by email.

Still, Beijing remains three times more polluted than Los Angeles, the smoggiest city in the United States, and the national average for air particulates is six times higher than the WHO recommends.

Without China’s declines, the world would have seen average pollution levels increase since 2013 instead of drop, the researchers said. — Bloomberg


转载说明:本文转载自Sunbet。 环球UG声明:该文看法仅代表作者自己,与本平台无关。转载请注明:a55555.net彩票网(www.a55555.net)_China’s clean air campaign reduces global smog
发布评论

分享到:

a55555彩票网(www.a55555.net)_MLB/大谷翔平压轴三垒打 破道奇先发8.1局无安打比赛
2 条回复
  1. 皇冠正网平台出租(www.huangguan.us)
    皇冠正网平台出租(www.huangguan.us)
    (2022-07-04 23:59:17) 1#

      根据观光指引,旅客必须全程戴口罩及消毒,也必须购买涵盖医疗费的海外旅行保险,旅途中要避免群聚等四点防疫规定。但指引也提到,在入浴时、进行户外活动(例如独木舟、爬山、果园采果等)以及在人潮不拥挤的景点观光等3种情况下,可以不用戴口罩。旅行团导游则需全程掌握团员足迹,要在游客两米范围内陪同,亦要记录所有行程。指引中建议导游可在交通、用餐时的安排固定座位。真的值啊

  2. usdt无需实名买卖(www.usdt8.vip)
    usdt无需实名买卖(www.usdt8.vip)
    (2022-07-19 00:06:55) 2#



    biu~爱心发射

发表评论

◎欢迎参与讨论,请在这里发表您的看法、交流您的观点。