Okay, so you already use CFLs and you're saving up for a hybrid car. The question now is, What's next for your sustainable lifestyle? Explore your options Saturday, when the Botanic Gardens hosts its first-ever natural living fair. Classes on composting, tai chi, and herb gardening should offer more than enough ideas for taking the next step. Sat, June 27. 7 a.m.-2 p.m. Free with paid admission Denver Botanic Gardens, 1005 York St., 720-865-3585