For today’s VC Sunday school, Molly asks Jason about valuation- valuing startups (1:44). Then for This Week in Climate Startups, Molly sits down with Ryan Shearman, CEO of Aether, to talk about how Aether makes diamonds using carbon extracted from the atmosphere (37:22).

(0:00) Cold Open
(1:44) VCSS: Valuation- reconsidering valuation, estimating valuation as a function of multiples
(13:16) Lemon.io - Get 15% off your first 4 weeks of developer time at https://Lemon.io/twist
(14:33) Why are some companies so secretive about their valuation?
(23:17) BetterHelp - Get 10% off your first month at https://betterhelp.com/twist
(24:31) Bridges, seed extensions, pre-series A
(30:38) Microsoft for Startups Hub - Apply in 5 minutes, no funding required, sign up at http://aka.ms/thisweekinstartups
(31:54) Toss to This Week in Climate Startups
(37:22) TWiCS: Ryan Shearman, CEO of Aether (making diamonds from atmospheric carbon)

Another 837,000 Americans filed fist-time unemployment claims last week. A technical glitch brings trading to a halt at the Tokyo Stock Exchange. Debate Commission will make format changes to limit interruptions in next debates.