The shape of our planet is one of the unknowns that has always existed on Earth. It has aconcreteshape and is something that ...

In order to try to understand myself how circular the orbit of the Earth was and other planets, I decided to compare the shape of Earth's orbit to an ordinary 26-inch bike wheel by scaling down ...

Planet Earth is perfect. Everything about our world ... This five-part series will show how the forces of nature drive, shape and support Earth’s great diversity of wildlife.