For International Dark Sky Week, learn about the health benefits of a night sky unobstructed by artificial light.

As an African-American large carnivore ecologist—and mother of a daughter—the Nat Geo fellow has an important perspective on getting girls and kids of color ... t get very good grades in ...

On this day 35 years ago, the famed Hubble Space Telescope was launched into low Earth orbit by the Space Shuttle Discovery. Built by ...