How it Works - Episode 27
Paper recycling: Every ton of recycled paper saves 17 trees from being cut down and pulped.
Mobile crane: The largest cranes in the world can cost 6.3 million pounds and can lift as much as 3000 tons.
Cherry jam: There are recipes for jam that date back to roman times. But instead of using sugar to sweeten them, they used honey.
Aalsmeer flower market: Tulips were very valuable in the 17th century, starting a craze called 'Tulipmania'. A tulip could sell for the equivalent of 300.000 pounds.