Roger Mustalish, Amazon researcher and protector, answers readers’ questions

For Roger Mustalish, head of the Amazon Center for Environmental Education and Research, a trip to Peru’s Amazon rainforest is, to quote the ubiquitous credit-card ads, priceless. (And by entering Grist‘s sweepstakes, your trip to Peru really could be price-less!) As InterActivist this week, Mustalish chats with readers about his inspirational first venture across a rainforest canopy walkway, his ire over disposable chopsticks, his thoughts about the acai fruit’s trendiness, and more.