In 1994, GM partnered with The Nature Conservancy and committed to donating $5 million over the next five years to fund domestic and international conservation efforts, as well as to donating GMC trucks to Conservancy preserves around the world. The automaker&rsquo;s fuel efficient Chevrolet Geo Line sponsors an environmental tree program that has planted over 150,000 trees in the past few years. Environmentalists consider the campaign to be &ldquo;<em>greenwashing</em>&rdquo; because GM has been a &ldquo;l<em>eader in the lobby against improved fuel efficiency in cars, and that lack of fuel efficiency is one of the primary causes of the greenhouse effect</em>,&rdquo; says a toxic trade campaigner with Greenpeace in New York. There have been many controversial issues surrounding General Motors&rsquo; policies. Filmmaker Michael Moore directed a documentary, &ldquo;Roger and Me&rdquo; that was an expos&eacute; of GM, including poor working conditions in their factories, low wages, and environmental problems. Meanwhile, seven pages of GM&rsquo;s website focuses on their environmental principles, how they are a responsible corporate citizen dedicated to protecting human health, natural resources and the global environment.