The Somerville Chamber of Commerce's B2Green Expo features some of the city's green businesses and organizations, including businesses like Recover, which specializes in green roofs, and Metro Power Pedal, which makes deliveries throughout the Boston area using bicycle-powered delivery "trucks."

The B2Green Expo takes place May 3 from 4 p.m. to 7 p.m. at the Holiday Inn, and if you're a business or organization who wants to participate, you need to register by Tuesday.

Below is the call for exhibitors from the Somerville Chamber of Commerce:

The Somerville Chamber of Commerce Green Committee and the City of Somerville invite local business and non-profit organizations to exhibit at the 2012 B2Green Expo & Networking—a jam packed mini-expo and a cool business after hours event.  The 2012 event focus is Green Jobs & Economy and encompasses green innovation across all sectors. Exhibiting at B2Green is an excellent way to showcase your organization; establish contacts with your industry peers locally; and expose your work to the media. The exhibitor deadline is Tuesday, April 24th. Contact B2Green Chair Rebecca Schrumm rjschrumm@hotmail.com.