Tumml: Empowering Entrepreneurs to Solve Urban Problems

Produced with  Bloomberg

Clara Brenner and Julie Lein met in the halls of MIT, but they would find their calling in downtown San Francisco.  That’s where, after leaving successful careers (in real estate and consulting, respectively), the best friends co-founded Tumml, a nonprofit urban ventures accelerator with a mission to empower early-stage entrepreneurs by providing seed money, workspace and, most importantly, hands-on mentorship to the next batch of companies that will change the Bay Area – and the world.

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