BBC OS Conversations: Air pollution

Looking back at five big US foreign policy shifts from the Monroe doctrine in the 19th Century to the post-9/11 strategies of the Bush doctrine in the early 2000s. Justin Webb and his guests examine how America’s approach to the world has constantly changed over time, to help ans ...  Show more

In the face of widespread protests, the Iranian government ‘switched off’ the country’s access to the internet on 8th January. In Uganda, prior to recent elections, the government of president Yoweri Museveni prevented its citizens from accessing the internet. Worldwide, Afghanis ...  Show more

More international firefighters are being sent to Canada to help tackle the source of huge wildfires which have created a toxic blanket of smoke. The haze that's drifted across the border to the east coast of the United States has temporarily made some American cities the most po ...  Show more

As Northern US cities struggle with smoke caused by wildfires in Canada, the South of the country tries to cope with intense heatwaves. We hear how a concrete contractor in Texas continues to operate while dealing with high temperatures. Also in the programme, the US administrati ...  Show more

Canada is having its worst fire season in modern history. The fires have burnt more than 20 million acres, casting hazardous smoke over parts of the U.S. and stretching Canadian firefighting resources thin. Public officials and many news headlines have declared the fires as "unpr ...  Show more

The wildfires sweeping Canada have become the largest in its modern history. Across the country, 30 million acres of forest have burned — three times as much land as in the worst American fire in the past 50 years.

The scale has forced an international response and a re- ...