Most people carry a fairly comfortable picture of the planet they live on: solid ground underfoot, north is north, and everything more or less stays in its place. That picture, it turns out, is ...

Add Yahoo as a preferred source to see more of our stories on Google. 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 ...

Given that we live here, there's a lot we know about Earth, but there is still tons of knowledge to uncover, some of which ...

British broadcaster Sir David Attenborough has frolicked with gorillas, tracked ancient fish, introduced viewers to flying pterosaurs, and warned millions that the natural world is running out of time ...

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 ...

1. Earth is not a perfect sphere. Yes, we've all been taught that the Earth is not flat, but it may shock you to learn that it's not perfectly spherical either. As the National Oceanic and Atmospheric ...