An exhausted oil-covered brown pelican sits in a pool of
| By Reuters
An exhausted oil-covered brown pelican sits in a pool of oil along Queen Bess Island Pelican Rookery, 3 miles (4.8 km) northeast of Grand Isle, Louisiana June 5, 2010. REUTERS/Sean Gardner
Preventable Diseases That Used to Kill Thousands
Doctors, nurses, medical researchers, and other healthcare professionals are among the most important people on Earth — some call them angels. History has brought dozens of horrific diseases, killing thousands. ...
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