I love the Today I Learned subreddit. Everything has to be sourced and checked, and I learn several new things every day. Of course I forget most of them soon after, but it is strange how many incredible facts there are out there.
There is also a long list of previously submitted facts, for example
*Albert Einstein turned down the offer of being President of Israel
*Napoleon’s height was not below average
*Honey never spoils
*Doctor Seuss wrote Green Eggs And Ham on a dare
*TIL when Monty Python started uploading their comedy skits to YouTube so they could be watched legally for free, their DVD sales went up by 16,000%
*John Cena has granted more than 400 makeawish
*Toy Story 2 was deleted then recovered from an employee’s home computer
*Brian May is an astrophysicist
*Penguins have knees
*The first country to recognize the US as an independent country was Morocco
*UK has a Chief Mouser position
*The damaged kidneys are left in your body when you get a kidney transplant
*The man who invented the Frisbee was cremated and made into Frisbees after he died
*Mao ordered all sparrows killed
*61 year old potato farmer won the inaugural Westfield Sydney to Melbourne Ultramarathon
*Superman couldn’t fly originally
*Dr. Ruth was a sniper
*Lego is the largest tire manufacturer by volume
*town in Florida seceded and immediately applied for foreign aid
*CAPTCHA stands for Completely Automated Turing test to tell Computers and Humans Apart
*Canadians apologized so much the government passed an “Apology Act”
*Ramesses II’s mummy needed a passport to go to France
*Koreans are born at 1 year of age
*There are more trees on earth than stars in the universe
*there are more stars than grains of sand
*Sudan has the most pyramids











Regarding the Chief Mouser in the UK, if I’m not mistaken, his name is Larry and he has a Twitter account, which I follow. He’s very witty, just like you would expect a cat to be!
I think you are correct! The Foreign Office and Downing Street each have a mouser.