然而该报告也强调，在转基因食品销售之前必须继续进行安全评估，以预防对人类健康和环境造成危害。

However the report also stresses the need for continued safety assessments on GM before they are marketed, to prevent risks to both human health and the environment.

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但是，因为健康和安全的原因，也担心会弄脏或造成破坏，孩子们经常被阻止与自然环境接触。

But children are frequently discouraged from involvement with natural Spaces for health and safety reasons for fear that they might get dirty or that they might cause damage.

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本照片故事阐述与城市化有关的主要卫生问题以及世卫组织为创建安全可靠和有益健康的城市环境提出的五项行动建议。

This photo essay highlights some of the key health issues related to urbanization and five WHO-recommended, calls to action to build a healthy and safe urban environment.

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