But Why?: How Does NASA Drive The Mars Rover?
But Why?

In this episode, St. Michael’s College astronomy professor John O’Meara answers how the Mars rover is driven from back here on earth?

But Why?: Ice, Ice, Baby: Why Is Ice Slippery?
But Why?

How does water turn into ice? Why is ice sometimes slippery and other times sticky? Why is it so cold? Why does it float? How are icicles made? Why are icebergs mostly underwater? What was the ice age?