The Sustainable Business Network of Massachusetts will host its 30th annual Conference on Sustainable Business from 8:30 a.m. to 2:30 p.m., May 31, at Natixis Investment Management, in Boston.

This is a great opportunity to engage with other local, green and fair businesses in the area. The conference includes keynote speakers, breakout sessions, ignite-five-minute presentations, networking, catered lunch and a tour of one of the greenest buildings in Massachusetts.

For three decades the Sustainable Business Network of Massachusetts has brought businesses, community leaders and nonprofit organizations interested in joining forces together in order to create a more just and sustainable Massachusetts.

Cost: SBN members and co-sponsors, $75; non-members, $95. Location: 888 Boylston St., Boston. For more information, call 617- 395-0250 or visit sbnmass.org.