As you fill a flat tire from your hand pump, you notice parts of the pump getting hot. Why would the pump get hot with all that cool air flowing through it?
As vegetables go, soybeans aren't very exciting. But they play a key role in the development of an alternative fuel called biodiesel.
And what will keep this massive city afloat? Simple: large airtight steel compartments that are linked together. That’s right, the Freedom will use the same basic technology as a raft.