› added 5 years ago

255

TIL that in 1983, a mexican electrician inadvertently spilled thousands of cobalt 60 pellets in Ciudad Juarez, which eventually made their way into two foundries and contaminated 3,000 tons of steel, causing one of the worst nuclear accidents in north american history.

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via reddit.com

LQXDQ TIL Dogs can sense weak thermal radiation with their noses
v1Ng4 TIL That cells in the retina decline in sensitivity as we age. Meaning that colours e.g blue appear washed out as the years pass. In short the sky actually was bluer when you were younger.
gMdbX TIL that rice farmers often put fish into their water-laden fields in a process called “rice-fish culture.” The fish act as pest control, improve oxygen circulation, and can even fertilize the soil with their droppings. This can increase the crop yield by 10% or more.
OGD8Y TIL the concept of Jamais Vu, which is the opposite of the more familiar term Deja Vu
MWXW TIL Spiderwort is natures Geiger counter the petals of the flower turn from blue to pink when exposed to radiation