In recognition of（按照，承认） Earth Day's 40th anniversary, publisher Mary Ann Liebert, Inc. (www.liebertpub.com) will provide complimentary（问候的，称赞的） online access to its journals in the field of sustainability（永久性，持续性） , including Sustainability: The Journal of Record; Environmental Justice; and Ecopsychology through May 15. Each journal provides cutting-edge information about sustainability initiatives（创始，积极性） , the relationship between mankind and nature, and the protection of our citizens and our planet. In this month's issue of Sustainability: The Journal of Record (www.liebertpub.com/sus), Ray Anderson, the Founder and Chairman of Interface, reflects on "Earth Day, Then and Now." "In the Green" reports on what a number of organizations and institutions are doing to commemorate this auspicious（吉利的，幸运的） anniversary, including Major League Baseball, Walt Disney Studios, Dow Chemical Co., and Northwestern University. The Journal documents the implementation（履行，实现） of sustainability programs in higher education and business, and provides the central forum for academic institutions, the business community, foundations, government agencies, and leaders of green-collar endeavors（努力，尽力） to learn about one another's progress and programs and foster（养育，培养） collaborations for attaining（获得，到达） mutually supportive objectives.

Environmental Justice offers a provocative（刺激的，挑拨的） view of "Earth Day at the Crossroads of Sustainability and Justice," with contributions by Editor-in-Chief Sylvia Hood Washington, PhD, MSE, MPH, University of Illinois at Chicago, David Naguib Pellow, PhD, University of Minnesota, and Kristen Schrader-Frechette, PhD, University of Notre Dame, among others.

Now in its third year, Environmental Justice (www.liebertpub.com/env)explores the adverse（不利的，相反的） and disparate（全异的，不同的） environmental burden impacting marginalized（排斥，忽视） populations and communities all over the world.

Articles in Ecopsychology (www.liebertpub.com/eco), edited by Thomas Joseph Doherty, PsyD, explore the relationship between environmental issues and mental health and well-being, and examine the psychological, spiritual, and therapeutic（治疗的） aspects of human-nature relationships, concern about environmental issues, and responsibility for protecting natural places and other species.