Ah, Earth. We may not think about our planet on a day-to-day basis, but the world we live in is a pretty interesting place. The third rock from the Sun—and to this day, the only one with known ...

Earth Day started in the 1970s. Here’s an Earth Day fact everyone should know: Earth Day was first observed on April 22, 1970, followed in 1972 by World Environment Day. It has ...

A college student in a gas mask "smells" a magnolia blossom during the first Earth Day on April 22, 1970 in New York City. More than 8 billion people inhabit our planet, and each year Earth Day ...

Earth is a planet with an abundance of natural beauty. The luscious green forests, the breathtaking waterfalls, the rugged-yet-serene mountains—there’s so much to admire and explore on our planet.