The problems of lightening motorcar and recycle of material were brought forward for sparing energy sources and protecting environment of the Earth.

为了节约有限的能源和保护地球环境，人们开始提出汽车的轻量化和材料的再生利用等问题。

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Artificial soil technology will be used to restore the green vegetation and repair the ecological environment of the earth, which will take about 2000 years to complete.

应用人造土壤技术恢复绿色植被，修复地球生态环境，这项工程大约需要 2000 年才能完成，其工程量特别巨大。

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Actively responding to the call of "Eliminating ODS materials" by the UNDP and the State Environmental Protection Administration of China, the company has developed environment of the earth.

克力公司积极响应联合国计划开发署和国家环保总局关于“淘汰ods物质”的号召，大力开发不同规格的环保型清洗设备，为“保护地球环境”作出应有的贡献。

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But Friends of the Earth Middle East says that would cost too much and could damage the environment.

VOA: special.2009.05.18

Population science is once more centre-stage, pushed by climate change, which raises worries about the impact so many billions have on the environment of the earth, and food-price spikes, which imply doubts about whether it will be possible to feed them all.

ECONOMIST: The digressions of people power

Diana Liverman, co-Director of the Institute of the Environment at the University of Arizona and co-Chair of the Future Earth design team.

UNESCO: THEMES

The groups are Friends of the Earth, the Aviation Environment Federation, the National Society for Clean Air, and the Heathrow Association for the Control of Aircraft Noise.

BBC: Pollution warning on holiday flights