› added 9 years ago

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TIL concrete can be made translucent by incorporating optical fibers in merely 4% of its volume. The material feels and behaves just like concrete, but allows light to pass through.

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via reddit.com

WkXJ4 TIL that bananas are actually berries, and strawberries and raspberries are not berries at all. I feel betrayed
gM9Q8 TIL about eight-year-old Christian McPhilamy. He endured bullying as a result of him deciding to grow his hair out long in order to donate it to kids who lost their hair as a result of cancer.
PgdZ TIL that the white suicide rate is almost as high as the black homicide rate. Also, the black suicide rate is far lower.
neD6P TIL Scientists and mathematicians test higher on autism spectrum
WndY TIL that 71% of Americans are “fairly certain” that Alexander Hamilton is among their nation’s past presidents. This confidence in Hamilton having been president is higher than for six actual presidents.