Student environmental activists are turning their attention anew to corporations, trying to cajole or shame them into changing their practices for the benefit of the planet. Last month, Yale student Glenn Hurowitz staged a demonstration at BP Amoco’s New York offices and delivered a stack of resumes from business and engineering students who had pledged not to work for the company until it promises not to drill for oil in Alaska’s Arctic National Wildlife Refuge. Some such protests are part of an Ecopledge campaign, which is asking students to refuse to take jobs with companies considered to be environmentally irresponsible. Enviros are also introducing an increasing number of shareholder resolutions to try to force corporations to address environmental issues.