- The softest known mineral is talc.
- Ralph Lauren's original name was Ralph Lifshitz.
- Sun light can penetrate clean ocean water up to a depth of 73m (240 feet).
- Petrol has no specific freezing point (it can freezes at any temperature between -82 and -115C (-180 and -240F).
- Sound travels 4.3 times faster through water than in air.
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