It's still possible to see the division between East and West Germany due to different light bulbs.
5
The water between India and Sri Lanka is only 3-30 feet deep and was purportedly passable on foot until 1480 AD when a cyclone moved some sand around.
1
The longest cave in the world is the 'Mammoth Cave System' in the USA at 560,000 mtrs deep!
63
The Caspian Sea is also classed as the world's largest lake.
52
The city of Houston, Texas is built on a swamp and is slowly sinking!
89
The Sahara desert expands at about 1km per month.
90
In one day, a full grown redwood tree expels more than 2 tons of water through its leaves.
56
The Amazon rainforest produces more than 20% the world's oxygen supply.
182