› added 12 years ago

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TIL The Red Cross sells the blood that people donate

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N7JEe TIL: To identify the pilots guilty of "buzzing" (doing dangerously low-altitude fly-bys) of bases or populated areas, for decades many US military planes were marked with short unique I.D. codes painted-on with large letters. Such marks (different from serial numbers) came to be called BUZZ NUMBERs.
691Zm TIL that Natural Spirit charges $2 for a single can of their sparkling water but charges $12 for four of them.
D1Vyr TIL humid air is lighter than dry air. This is why low-pressure areas (L) bring the rain, not the high-pressure areas (H). And this is because water (H2O) molecules are actually lighter than Oxygen (O2) and Nitrogen (N2) that make up the atmosphere.
VM66G TIL Harry Redknapp is Frank Lampards uncle
Z8EOR TIL Your smartphone is millions of times more powerful than the Apollo 11 guidance computers