The doctor who discovered how cholera spread

During the Vietnam War, North Vietnamese VietCong guerrillas built a vast network of tunnels in the south of the country as part of the insurgency against the South Vietnamese government and their American allies. The tunnel network was a key base and shelter for the North Vietna ...  عرض المزيد

In February 1979, after the Shah left Iran, religious leader Ayatollah Khomeini flew back to Tehran from Paris.He had been in exile and was greeted by millions of people lining the streets. In 2011, Mohsen Sazegara who worked for the Ayatollah, spoke to Louise Hidalgo.Eye-witness ...  عرض المزيد

In the 1850s, there were a lot of things we didn’t know yet: how to create an airplane, how to split an atom, or how to control the spread of a common but deadly disease: cholera. When a cholera outbreak in London killed scores of people, a doctor named John Snow used it as a cha ...  عرض المزيد

The classic tale of epidemiology almost always begins with public health hero John Snow traipsing all over London to track down the source of the 1854 cholera epidemic, ultimately identified as the Broad Street Pump. While Snow’s famous endeavor earned him the title “the fathe ...

Throughout human history, cities have grappled with how to keep excrement separate from drinking water. In the Middle Ages, gong farmers excavated human waste from city dwellers and took it to the countryside to be used as fertilizer. In the 19th century, cities grew so big, this ...  عرض المزيد

August 27, 1900. Dr. Jesse Lazear, a U.S. Army surgeon, walks into Las Animas Hospital Yellow Fever ward in Havana Cuba, toting a brood of mosquitos. He has the system down: remove the cotton stopper that keeps the mosquito penned in its glass vial, turn the vial over, and seal i ...  عرض المزيد