A historical defense of arranging book collections by color. Scientists have sequenced the oldest DNA ever found and made some mammoth discoveries in the process. And NASA’s Perseverance rover is set to touch down on Mars tomorrow––some background on one experiment it will be running that could set the stage for human travel to the red planet.Sponsors:OurCrowd, ourcrowd.com/kottkeSkillshare, Get a free trial of Premium Membership at skillshare.com/kottkeLinks:No Mere Foppery: A Defense of Rainbow Bookshelves (Book Historia)Announcing the fifth annual Honey & Wax Book Collecting Prize. (Literary Hub)Million-Year-Old Mammoth Teeth Contain Oldest DNA Ever Found (Gizmodo)Million-Year-Old DNA Rewrites the Mammoth Family Tree (NY Times)Scientists Have Sequenced Mammoth DNA That's Over a Million Years Old (Science Alert)Watch Online: Mars Landing (NASA) Krispy Kreme makes special ‘Mars Doughnut’ to celebrate Perseverance rover landing (Space.com)Here's how the Perseverance landing could pave the way for humans on Mars (Space.com)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.