› added 6 years ago

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TIL that over 25% of irrigated land in the US uses groundwater from the Ogallala Aquifer. Since large-scale agricultural extraction began in 1950, its size has been reduced by nearly 10%. Once depleted, it will take 6,000 years for the aquifer to replenish.

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j6VYN TIL that John Tyler, the 10th U.S. President still has a living grandson, Harrison Tyler who is 94 yrs old.
VM1GB TIL that for 25 years, the Space Shuttle couldn't fly a mission over New Year's because the flight computers couldn't cope with the year changing. This was only fixed in 2007, four years before the fleet's retirement.
woAJo TIL Hawaii is the only state in the US to have a single school district and no local school boards.
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