From reducing electricity consumption to creating energy-efficient lighting, Tumml's most recent batch of startups is tackling tough urban problems. Want to learn more about them? Join us at SPUR on December 5th for a roundtable on The Future of Clean Energy in Cities. The panel will feature the five startup winners of Tumml's Urban Clean Energy Prize, and an in-depth discussion about launching innovative solutions to urban problems. Reserve your tickets here and help us spread the word!

Also, check out an article Tumml Director May Samali recently co-authored for the Stanford Social Innovation Review about catalytic collaboration for nonprofits. You can read more updates from Tumml here, as well as stories we're following. For example, our co-founder Julie Lein was quoted in a San Francisco Business Times story about impact investing.