Exploratorium: Earthquake Faultline Why the Earth Shakes

Did you ever wonder which season is best for viewing the full moon? Find out why winter wins the honor, and why the tilt of Earth''s axis is the main contributor. 

Top tens lists are a lot of fun, and this one is educational as well! Viewers of the video find out ten reasons we know that the earth is not flat, as the pre-Colombus world believed. Some of the reasons are obvious, some are common...

How is the Earth like an onion? In this video from PBS Digital Studios, viewers first learn the different layers of Earth and their properties. In addition, they hear how these layers came about, starting with the Big Bang theory and the...

Deserts make up 33 percent of the land surface area on the earth, so why does Earth have them? The video explains the wind and weather patterns that lead to deserts as well as rain forests. It details how this is related to the ocean...

The big question is, how do we know about the composition of the earth's core? Sal explains that at 105 degrees from the source point of an earthquake, the phenomenon of the p wave shadow zone leads us to conclude that the waves are...

Imagine a world where the only animals roaming the earth are domesticated. One day, we might not have to imagine the scenario of no wild animals—and that day approaches faster than predicted. A video explains the evolution from...

This outstanding website provides an excellent variety of hands-on earthquake activities to help you understand what causes earthquakes.

Why is Earth different from other planets? What makes it so special, anyway? It's only fitting to delve into how the "parent" rock was formed in the first installment of a seven-part series about rocks and rock formation. Amateur...

What happens in the Arctic doesn't always stay in the Arctic. Follow along with this short video as it investigates how small changes in the temperature of Arctic regions can have dramatic effects on the global climate through a series...

Cell phones to crowdsource vibrations to warn of incoming earthquakes? Detectors to register high levels of radon-thoron isotopes? After detailing the factors that make earthquakes so difficult to predict, the narrator of a fascinating...