Prehistoric time line, geologic time scale, photos, facts, maps, and more from National Geographic. Humans have walked the Earth for 190,000 years, a mere blip in Earth's 4.5-billion-year history.

It seems like wasted real estate,” Kane says. So Kane dropped a fictional super-Earth in that gap to see what would happen. The results are published in a recent issue of the Planetary Science ...

But before Darwin published his groundbreaking work in 1859, other scientists were already trying to explain the diversity of life on Earth ... happen in real time when island rainfall patterns ...

A collection of down-to-Earth facts about our planet and its place in the solar system. This collection introduces the Sun as the main source of light and heat on Earth. It explains that the Earth ...

Rainforests in these regions cover just 2% of Earth's total surface area and yet house half of the world's plant and animal species. Deforestation is the clearing of forests. Most deforestation ...

this day is marked as Earth Rotation Day because of the relevance. Science, astronomy lovers honour Leon Foucalt today. Interesting facts Did you know that Earth is spinning faster than it has in ...