South Africa's coal-mining heartland has the worst air quality in the world, according to a recent study by environmental organization Greenpeace. The 12 large coal mines in this area make it the world’s hotspot for toxic nitrogen dioxide emissions. Residents and health experts say the effects of this are ruining their health and their lives. VOA’s Anita Powell went to the coal heartland of Middelburg, South Africa, and filed this report.
The mass migration flows that followed the Arab Spring in North Africa and the Middle East were partly caused by climate change, according to new research. Scientists from the International Institute for Applied Systems Analysis in Austria say that in certain circumstances, climate conditions can lead to conflict, which drives increased migration. Henry Ridgwell reports.