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A photostory from National Geographic about overpopulation.

Charles Q. Choi Sea level rise on the U.S. East Coast has accelerated much faster than in other parts of the world-roughly three to four times the global average, a new study says. Calling the heavily populated region a sea level rise hot spot, researchers warn that cities such as Boston, New York, Philadelphia, and Baltimore could face a more flood-prone future.

This article discusses the global health issue of sickle cell disease especially among African populations, which remains a severe problem 100 years after its discovery.