Michelle You is co-founder and CEO of Supercritical, the leading carbon removal marketplace that helps companies like Microsoft and Virgin Atlantic buy vetted, high-quality carbon removals. Before becoming a climate founder, she built music startup Songkick to over 20 million monthly unique users, raised capital from Y Combinator and Sequoia, and exited to Warner Music Group. She joins Terhi and Allison to talk about the wake-up call that pulled her into climate, what carried over from building one marketplace into a completely different sector, and what it takes to build at startup speed toward a problem measured in decades.