Seth Siegel

Writer, Lawyer, Entrepreneur, Water Policy Expert

Severn Cullis-Suzuki

Environmental Activist & Executive Director at the David Suzuki Foundation

Sharon E. Burke

Assistant Secretary of Defense for Operational Energy Plans and Program, Department of Defense

Sharon Lavigne

Environmental Justice Activist in Cancer Alley

Sharona Shnayder

Environmental Activist & Founder of Tuesdays for Trash

Sheikh Hasina Wajed

Prime Minister of Bangladesh

Sheila Watt-Cloutier

Environmental, Cultural & Human Rights Advocate, Former Canadian President of the Inuit Circumpolar Council

Shelton Johnson

Shelton Johnson dreamed of mountains as a boy, living in inner city Detroit.

Sheril Kirshenbaum

Popular Science Expert & Conservationist

Sherri Goodman

Senior Vice President, CNA

Sheryl Crow

Grammy Award-Winning Singer-Songwriter

Shin-pei Tsay

The director of Cities and Transportation in the Energy and Climate Program at the Carnegie Endowment for International Peace.

Sinan Ülgen

Visiting scholar at Carnegie Europe in Brussels

Sonia Guajajara

Brazilian Indigenous Activist, Environmentalist, & Politician

Sophia Kianni

Climate Activist & Founder of Climate Cardinals; Member of the UN Youth Advisory Group on Climate Change

Meet L'Oréal Paris Women of Worth Honoree Sophia Kianni, Climate Cardinals

Stacy Malkan

Campaign for Safe Cosmetics, Author, Not Just A Pretty Face: The Ugly Side of the Beauty Industry

Stacy-Ann Gooden

Meteorologist

Stephen Coleman

Stephen Coleman studies applied ethics, particularly the ethics of military and police force, and their application to human rights.

Steve Levine

Steve Levine was born in Flushing, New York in 1952.

Steven Callahan

Steven Callahan is probably best known for his book "Adrift: Seventy Six Days Lost at Sea", based on his own survival voyage.