Every morning, here on Earth, the sun rises in the East – and the day begins.Later it sets in the West – and it becomes night. But have you ever wondered why that happens? Humans once believed ...

the Earth, Sun and Moon why we get day and night what we can see during the day and at night why days and nights are different at different times of year. And you can test what you've learned with ...

In an awe-inspiring display of nature's beauty, this marvelous time-lapse shot in Ladakh captures a breathtaking transition from day to night. It exhibits the strong but peaceful change over our ...

Various incredible natural phenomena exist across Earth's surface. Rare and unexpected natural wonders occasionally become ...

Learn about Earth Day founder Gaylord Nelson (1916–2005) and how environmental disasters of his day inspired the creation of Earth Day in 1970. On December 7, 1972, Apollo 17 astronauts captured a now ...