Due to gravitational effects, you weigh slightly less when the moon is directly overhead.
55
The city of Houston, Texas is built on a swamp and is slowly sinking!
89
Mexico City is built on top of an underground resevoir!
47
The North Atlantic gets 2.5 centimetres (1in) wider every year.
119
Forest fires move faster uphill than downhill.
52
The average ice berg weighs 20,000,000 tons!
54