The largest earthworm on record was found in South Africa and measured 22 feet.
151
The lifespan of mammals is about 1 and a half billion heartbeats.
127
The United States has paved enough roads to circle the Earth over 150 times.
72
If you have 1 billion dollars and spend $1,000 every day, it would take you 2,740 years to go broke.
31
The human brain doesn't stop developing until about 25 years old.
102
Pluto is smaller than Russia.
9
Tigers can see 6 times better at night than humans.
305