Physicists have measured sound diffusion in a perfect fluid for the first time ever and created a surprisingly popular SoundCloud track. A bunch of new works are entering the public domain in just a few weeks. And the Kellogg brothers are best remembered for inventing cornflakes, but in their time they were known for a number of other odd foods; a look at their B-side, including snowflake toast and the world’s first patented meat substitute.Sponsors:Fitbod, Get one month free at Fitbod.me/kottkeHelloFresh, Use code ridehome80 to get $80 off including free shipping at HelloFresh.com/ridehome80Links:Physicists capture the sound of a “perfect” fluid (MIT News)Public Domain Day 2021 (Duke Law Center for the Study of Public Domain)Before Avocado Toast, There Was Snowflake Toast (Atlas Obscura)We're Entering a New Age of Meatless Meat Today. But We've Been Here Before (Smithsonian Magazine) Corn Flakes | The Brothers of Battle Creek | 1 (American Innovations)Kottke.OrgJackson Bird on TwitterSee Privacy Policy at https://art19.com/privacy and California Privacy Notice at https://art19.com/privacy#do-not-sell-my-info.