Villagers displaced from their homes walk through flood waters on August 24, 2010, near Muzaffargarh in Punjab, Pakistan. Daniel Berehulak/Getty Images hide caption
Global Health
Thursday
Monday
The Ebola virus causes a hemorrhagic fever that is usually deadly. Frederick Murphy/CDC hide caption
Wednesday
Friday
Wednesday
Tuesday
Monday
Friday
Friday
Why don't Tibetans feel lightheaded this high above sea level? It's in the genes. iStockphoto.com hide caption
Friday
Canadian Prime Minister Stephen Harper (left) and French President Nicolas Sarkozy meet at the G8 summit in Huntsville, Ontario. Eric Feferberg/AFP/Getty Images hide caption
Wednesday
Tuesday
Wednesday
Thursday
Monday
Melinda Gates discusses maternal and child health at a womens' health conference in Washington on Monday. Haraz N. Ghanbari/AP hide caption