July 30, 2016 at 12:05PM

Today I Learned: 1) Tonic water is water with quinine. Originally, tonic water was consumed for its anti-malarial benefits, but it tasted so bad that Englishmen eventually started adding sugar and carbonation for taste, which eventually led to gin and tonic. Modern tonic water has considerably less quinine (about 300 µM) than original formulations (not sure how much it used to be). 2) Quinine in water (so, tonic water) glows bright blue under UV. Someday, I should get some tonic water for testing "UV flashlights" and blacklights (eggshells also work, but as a vegan, I'm less inclined to get those...). 3) There are sunglasses for dogs. They are called "doggles".