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TIL sheep farming accounts for 80% of all agriculture in Wales.

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mxBmE TIL that money can actually buy happiness - perhaps even without limits. Previous studies assumed the well-being plateaus would be at 75.000$ yearly income per household.
rRe8y TIL Colored gems (e.g. rubies and sapphires) at Tiffany & Co. are a massive ripoff because they do not clearly disclose fracture filling treatments. Infused with "colorless substances to improve color and clarity" is the difference between a $100/carat ruby and a $10000/carat ruby.
yQMnX TIL A telescope designed to view the H-alpha emission produced by excited hydrogen can show granulations on the solar surface and great detail in the sunspot regions. The H-alpha filter must be designed to produce a very narrow pass band around the wavelength of 6,562.8 Ångströms for safe viewing
yQKmM TIL of the Diverging Diamond Interchange; a type of highway interchange in which the directional roadways of the non freeway road switch over each other either temporarily using under/overpasses or traffic signals, making it simpler to enter and exit the freeway.
Lw5Q TIL there was a “Fairness Doctrine” that stated that broadcasters had to present both sides of a controversial issue; it was revoked in 1985 under the basis of violation of free speech.