A giant sequoia located in Sequoia National Park in California, the General Sherman is 52,500 feet in volume and is more than ...

Apparently, it’s moving further away from the Earth each year. At an annual rate of 3.82 centimeters, the moon's creeping ...

Related: 10 devastating signs of climate change from space How well do you know Earth? Take the Earth Day quizzes to find out. Earth Day is an annual event that started in 1970 when 20 million ...