The World Health Organisation (WHO) singles out air pollution as one of the greatest environmental threats to health, as it accounts for a high number of non-communicable diseases such as heart attack ...

This is part of a monthly series answering readers' climate-related questions and highlighting Arizona's unsung climate leaders. The stories aim to help to connect and inspire Arizonans who care about ...

Air pollution levels keep getting worse for more people in the US, according to a new report, and experts say the Trump administration’s proposed deregulation plans will make it even harder for people ...