Babies in South Asia were worst affected¹, with more than 12 million living in areas with pollution six times higher than safe levels. A further four million were at risk in East Asia and the Pacific.

南亚的婴儿受环境污染影响最为严重，有超过1200万的孩子生活在污染超标六倍的环境当中。而在东亚和太平洋地区，则有超过400万的孩子受到影响。

Unicef said breathing particulate² air pollution could damage brain tissue and undermine cognitive³ development.

联合国儿童基金会称，吸入特定的有害气体，可能会损坏脑组织并降低认知能力。

Its report said there was a link to "verbal and non-verbal IQ and memory, reduced test scores, grade point averages among schoolchildren, as well as other neurological behavioural problems". The effects lasted a lifetime.

该基金会的报告称，环境污染与“语言和非语言智力、学生不断降低的测试成绩、平均成绩以及其他神经问题”都有联系，而这种影响会持续终身。

As more and more of the world urbanises, and without adequate protection and pollution reduction measures, more children will be at risk in the years to come," Unicef said.

联合国儿童基金会称，随着世界各地城市化越来越普及，但却没有任何合适的保护以及降低污染的措施，未来将会有更多的孩子被暴露于环境污染的危险之中。

It called for wider use of face masks and air filtering systems, and for children not to travel during spikes⁴ in pollution.

该基金会呼吁在污染高峰期间，要大范围使用口罩，而且尽量不要外出。

Last month hazardous⁵ smog began blanketing the Indian capital Delhi, prompting the Indian capital's chief minister Arvind Kejriwal to say the city had become a "gas chamber⁶".

上个月，印度首都德里发生了严重的雾霾，德里首席部长凯杰·里沃得尔称该市已经成为一个毒气室。

Some schools in the city were closed but there was criticism when they re-opened, with parents accusing the authorities of disregarding their children's health.

德里的很多学校停课，当这些学校恢复上课后，遭到了一系列批评，家长们指责学校罔顾孩子们的健康。

Indian and Sri Lankan cricketers playing in Delhi vomited⁷ on the pitch during high levels of pollution.

此外，由于空气污染太过严重，印度和斯里兰卡的板球运动员竟然在比赛期间就在球场上呕吐起来。

Satellite imagery used to compile the data also revealed that the issue was growing in African cities, Unicef said.

联合国儿童基金会称，用来收集数据的卫星云图显示，在非洲，这一污染问题也在逐渐加重。

Meanwhile a separate study by scientists at hospitals in London found that the British city's polluted air was leading to lower birth weights, linked to higher infant mortality.

此外，一项由伦敦科学家进行的独立研究显示，英国城市的污染的空气，导致了新生儿出生体重过轻，并且与更高的婴儿死亡率有所关联。