While existing cities look for ways of becoming more environmentally friendly, a number of new ones are planned that intend to be totally green.

当现存的城市正在寻求加强环保的途径之时，一些新建的城市被设计走彻底环保的道路。

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While shoppers are more likely to buy environmentally friendly products on the high street where they can be seen to make the selfless choice, but behind closed doors it is a different matter.

当大庭广众下的购物者更倾向于购买绿色商品以展现无私精神时，关上家门在网上购物就是另一回事了。

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But by taking the bang out of the sonic boom a new generation of supersonic cruisers aim to rekindle that sense of glamour while making it a quieter and more environmentally friendly 21st-century mode of travel.

CNN: Bang goes the sonic boom

"The Eco Park will help us to treat food and household waste in a more cost effective and environmentally friendly way, while generating green electricity from rubbish that can't be recycled, " he said.

BBC: Artist's impression of recycling centre