- Black on yellow are the 2 colors with the strongest impact.
- The 'black box' that houses an airplanes voice recorder is actually orange so it can be more easily detected amid the debris of a plane crash.
- Halley's comet passes the Earth every 76 years (the next time it will return will be 2062).
- The bones of a pigeon weigh less than its feathers.
- Rainbows can only be seen in the morning or late afternoon (the sun needs to be less than 40 above the horizon).
- Owls can't move their eyes from side to side.
- The shortest war in history lasted for only 38 minutes.
- The world's smallest mammal is the bumblebee bat of Thailand.
- Wooly mammoths grew as tall as 14 feet, weighing 10 tons. Mammoths used tusks for protection and to attract mates.
- People in Iceland read more books per capita than any other country.
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