If the gap is absent in babies, this suggests it is caused by environmental factors, which can presumably be fixed.

既然婴儿中不存在差别，那么，差别是由可以控制的后天环境因素所致。

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GAP Adventures took its focus on social and environmental responsibility one step further by launching a sister nonprofit organization, the Planeterra Foundation, in 2002.

2002年GAP Adventures公司启动了一个女性非营利机构Planeterra基金，以进一步关注社会和环境责任。

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The UK-based Royal Commission on Environmental Pollution says that while the materials have so far shown no sign of being harmful, there is a "major gap" in research about their potential risks.

这份报告由英国皇家环境污染委员会完成，它说，尽管纳米材料迄今为止没有表明有害的迹象，但是对其潜在风险的研究还有“严重的欠缺”。

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But the development has been uneven, leading to a widening wealth gap, environmental challenges and rumbling social discontent over inequality and corruption.

BBC: China confirms leadership change

Talk of a model is made all the harder by the stability-threatening problems that breakneck growth engenders, from environmental destruction to rampant corruption and a growing gap between rich and poor.

ECONOMIST: The China model

It is urgent to bridge this gap as we have already passed some environmental tipping points.

UNESCO: Post-Conflict and Post-Disaster Responses