Earth, our home planet, is a world unlike any other. The third planet from the sun, Earth is the only place in the known universe confirmed to host life. With a radius of 3,959 miles, Earth is the ...

These clips are from the BBC series, Primary Focus Science and Science Clips, Earth, Sun and Moon. Our main source of natural light is the Sun. Nuclear reactions at the core of the Sun create ...

Earth science concentrates on investigating how the planet works and why. This field delves into the many layers of the Earth and explains how those pieces fit together into a cohesive structure.