- An iguana can stay under water for 28 minutes.
- Sea water is approximately 3.5% salt.
- 'Topolino' is the name for Mickey Mouse Italy.
- The symbols used for addition (+) and subtraction (-) have been around for thousands of years but it wasn't until the 16th century that most mathematical symbols were invented. Before this time math equations were written in words, making it very time consuming..
- Sound travels 10 times faster through granite than air.
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