Sustainability Matters will hold a mushroom identification and foraging walk from 1 to 4 p.m. Oct. 20 in George Washington National Forest. The walk will be led by William Needham, president of the Washington, D.C., Mycological Society. The cost is $20 for SM members and $30 for non-members. Information, registration: firstname.lastname@example.org, www.eventbrite.com or www.facebook.com/SustainabilityMattersVA.
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