Venice Island was built on a foundation of tree trunks. 1200 years later, those same trunks still support almost all of central Venice.
8
Australia's Great Barrier Reef is 1,250 miles long!
45
The Amazon rainforest produces more than 20% the world's oxygen supply.
182
Due to gravitational effects, you weigh slightly less when the moon is directly overhead.
55
It's still possible to see the division between East and West Germany due to different light bulbs.
5
It takes a drop of ocean water more than 1,000 years to circulate around the world.
61