- Hypnotism is banned in public schools in San Diego (U.S.).
- Along with arithmetic, geometry was one of the two fields of pre-modern mathematics.
- Useful life of a modern toilet is 50 years.
- The stomach acids found in a snakes stomach can digest bones and teeth but not fur or hair.
- There are more tigers owned by Americans than in the wild worldwide.
- Arachibutyrophobia is the fear of getting peanut butter stuck to the roof of your mouth.
- Recycling one glass jar saves enough energy to watch TV for 3 hours.
- An astronaut can be up to 2 inches taller returning from space (the cartilage disks in the spine expand in the absence of gravity).
- The Hindu-Arabic numeral system began developing as early as the 1st century with a full system being established around the 9th century, forming the basis of the numerical digits 0, 1, 2, 3, 4, 5, 6, 7, 8 and 9 that we use today.
- The largest exporter of sugar is Cuba.
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