While most strains of the bacterium Escherichia coli are completely harmless, some can cause serious food poisoning in humans, occasionally leading to kidney failure and death. Jorge Ribas reports.
In 2002, vacation destination, Ocean City, Maryland is left reeling when the arrest of two armed robbers, leads to the discovery of two dismembered bodies in a local landfill.
One of the world's oldest and most notorious mass murderers, the bubonic plague, also known as the "Black Death," has leapt across the Atlantic Ocean to North America.
Researchers at the Smithsonian's National Zoo's new genetics lab use animal DNA to diagnose new diseases, help in conservation efforts and solve mysteries. Jorge Ribas goes inside.