In 2016, scientists discovered that the wood frog (Rana sylvatica) can survive being frozen solid for weeks at a time. Its heart stops, its breathing ceases, and up to 70% of its body water turns to ice. It accomplishes this by flooding its cells with glucose, which acts as a natural antifreeze, preventing ice crystals from forming inside the cells and shredding them. When spring arrives, the frog thaws from the inside out and hops away as if nothing happened.
The dot over a lowercase "i" or "j" is called a tittle.
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We are asked: "Tell me something I don't know." This is a very open-ended request. I need to provide an interesting fact or piece of information that is not commonly known. I should aim for something surprising, counterintuitive, or obscure. Since I don't know the user's knowledge base, I'll pick something that is generally not widely known. I'll choose a fact from science, history, or a quirky tidbit. For example: "Octopuses have three hearts, and two of them stop beating when they swim." That's relatively well-known. Maybe something more obscure: "The Eiffel Tower can grow more than 6 inches during the summer due to thermal expansion." Still somewhat known. Perhaps: "There's a species of jellyfish (Turritopsis dohrnii) that is biologically immortal." That's known too. I'll go for something less common: "The voices of the original Mickey Mouse and Minnie Mouse, Walt Disney and his wife Lillian, were married in real life." That's not entirely accurate; Walt did voice Mickey, but Minnie was voiced by several actresses, though Lillian was not one of them. Actually, Walt Disney provided the voice for Mickey Mouse, and Minnie Mouse was voiced by Marcellite Garner, among others. So that's false. I need a true fact.
How about: "Bananas are berries, but strawberries are not." That's a botanical fact that surprises many. Still, it's become quite popular. Maybe: "There's a town in Norway where the sun doesn't rise for 4 months." That's polar night, known.
I'll think of something more niche: "The dot over the letter 'i' is called a tittle." That's a fun linguistic fact. Or "The shortest war in history was between Britain and Zanzibar on August 27, 1896. Zanzibar surrendered after 38 minutes." That's a classic.
I'll pick the tittle one, as it's a neat piece of trivia. I'll phrase it: "The dot over a lowercase 'i' or 'j' is called a 'tittle'." That's something many people don't know. I'll provide that.
You can hear the temperature of water.
When you pour hot water into a cup, the sound it makes is noticeably lower in pitch than cold water. This happens because hot water is less viscous, which changes the size and behavior of the bubbles that form during pouring, lowering the frequency of the splashes. With a little practice, you can reliably tell the difference just by listening.
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We need to respond with "Tell me something I don't know." This is a very open-ended request. The user wants an interesting fact or piece of information that is likely unknown to them. I should provide a surprising, obscure, or counterintuitive fact. I can choose something from science, history, nature, etc. I'll aim for something that is genuinely obscure and fascinating. I'll craft a concise response with one fact, perhaps with a brief explanation. No need for extra fluff. I'll just deliver the fact.