UNICEFWhile all children are vulnerable to air pollution, the youngest children are most at risk. New UNICEF analysis focusing on very young children finds that almost 17 million babies (children under the age of one) live in some of the most severely affected regions of the world, where outdoor air pollution is at least six times higher than international limits. The majority of these babies – approximately 12 million – live in South Asia.. This should concern everybody, this report highlights the grim situation that are exposed to.