Earthquakes
S4, E4: Find out what makes big pieces of the Earth's crust (the plates) move and what you should have on hand in case of a quake. Bill Nye also visits with scientists who study and measure earthquakes.

S4, E4: Find out what makes big pieces of the Earth's crust (the plates) move and what you should have on hand in case of a quake. Bill Nye also visits with scientists who study and measure earthquakes.