2. The Airplane

Take to the sky with the dreamers whose work gave humans the ability to fly. From Leonardo da Vinci's "flying machines" to the modern commercial plane, without these inventions, we may have never left the ground.

3. The Robot

Learn how robots were first conceptualized in ancient Rome and see how their use has evolved over the centuries, from the calculator to the Roomba. Then, take a sneak peek at what future robots will be able to do.

4. The Car

Go for a ride through the 9,000-year history of the car, from its roots in dogsleds to Henry Ford's affordable and assembly line-built Model T, and meet the scientists working on the next generation of self-driving automobiles.

5. The Rocket

Learn the explosive history of the rocket, from its origin in ancient China, to its use as a weapon of war, to how adding hydrogen allowed it to carry astronauts all the way to the moon.

6. The Smartphone

Dial in to the fascinating history of the smartphone, from its roots in Morse Code to 2007, when Apple unveiled the first-ever iPhone. Plus, see how the next generation of smartphones will allow us to communicate through them just by thinking.