Delhi's pollution and South Africa's solar power 新德里环境污染，南非发展太阳能

本集内容 Cleaning up Delhi's air 净化新德里的空气

Solving South Africa's power crisis 解决南非能源危机

It's morning rush-hour in Delhi. Cars slowly inching. A city that's slowly choking. Delhi's air is the worst in the world. It's 25 times more toxic than the safe levels set by the World Health Organisation and cars are responsible for nearly half of the most dangerous pollutants. Every week more than 3,000 new cars are added to the roads of this city. The government's been trying to restrict their use and has banned cars that are more than 15 years old.

新德里清晨的高峰期，车流缓慢地向前挪动。这是一个逐渐被呛得透不过气来的城市。新德里的空气质量目前是世界上最差的，其空气有毒性指数已高出世界卫生组织设定的安全指数25倍，而其中近一半的最危险的污染物来自于汽车。每周仍有超过3000辆的新车加入到这座城市的道路中，尽管政府一直试图限制车辆的使用，并已禁止车龄超过15年的汽车上路。

Power from the sun. In South Africa's Northern Cape, sunshine is in abundance. Harnessing that power would seem to be a logical step towards solving part of the country's energy crisis. It's a crisis which is well documented – a strained grid, blackouts and now a price increase. As South Africa's predominantly coal-powered power plants strain to meet the demand, renewable energy is becoming more attractive.

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