'Alarming and unprecedented' Irish bird flu warning
Hundreds of seabirds with suspected avian flu have been found dead in recent weeks.
1970-01-01 08:00
The 20 Cities With the Worst Air Pollution Worldwide
Under normal circumstances, the U.S. doesn't rank on the list of the 20 worst cities for air quality.
1970-01-01 08:00
Mozambique cholera: Why outbreaks have sparked unrest
Misinformation about measures taken to tackle cholera outbreaks has led to violent protests.
1970-01-01 08:00