Rosemary Ostfeld ’10, MA ’11, an E&ES and biology major, is a semi-finalist for Sierra Club’s “Best Internship on Earth.” The winner will spend the summer video-blogging on different Sierra Club outings sponsored by the club’s Inner City Outings, Building Bridges to the Outdoors, and Volunteer Vacations programs. A four-year member of Wesleyan's Outing Club and former house manager of OutHouse, Ostfeld also developed and led an outdoor program for Snow Elementary School in Middletown. She says that Suzanne O’Connell, associate professor of earth and environmental sciences and director of service learning, encouraged her to apply for the internship with…