Famous 20th Century Environmental Activists

Australian Steve Irwin was a world famous, high-spirited, lively host of The Crocodile Hunter television series. A conservationist, he was also part of other shows and documentaries on wildlife and environment. He was known for close encounters with some of the most dangerous and endangered animals in various jungles. He died after being pierced in the chest by a stingray barb while filming in Australia's Great Barrier Reef.

Legal consultant, environmental activist, and consumer activist Erin Brockovich is known for suing California-based Pacific Gas & Electric Company, alleging them of contamination of water with hexavelent chromium, in 1993. Her story inspired the Julia Roberts-starrer 2000 movie Erin Brockovich. She has written two books and hosted TV shows, too.

Walton Goggins is best known for his Emmy-nominated performance in Justified and has also played a long-running role in The Shield. His short film The Accountant won an Academy Award. He is an avid traveler and photographer, too, and also co-owns the spirits company Mulholland Distilling.

Timothy Treadwell is best remembered for his work on Alaskan bears. He founded the organization Grizzly People and lived among bears in the Katmai National Park for 13 years. In 2003, he and his girlfriend were killed and eaten by a brown bear. He inspired the documentary Grizzly Man.

Laurie David is an American environmental activist best known for producing An Inconvenient Truth, a documentary film that has been credited for reenergizing the environmental movement and raising public awareness on global warming. In 2003, she was honored with the Children's Nature Institute's Leaf Award for her efforts to educate young children about our environment.

American actor and environmentalist, Ed Begley Jr., is perhaps best known for playing the role of Dr. Victor Ehrlich on the NBC medical drama series St. Elsewhere. Equally at home on big screen, he has worked in numerous feature films, also appearing in award-winning mockumentaries like Reboot Camp.  An environmentalist since 1970, he has authored several books on the subject.

Q'orianka Kilcher is an American actress, activist, and singer. She is best known for playing important characters in films like The New World and Princess Kaiulani. As an activist, Kilcher has been visiting universities and colleges and delivering speeches at organizations like Amnesty International. 

Anni-Frid Lyngstad is a Norwegian-Swedish environmentalist, singer, and songwriter. She is credited with co-founding the popular Swedish pop band ABBA and popularizing the band by serving as its lead singer. In 2010, Anni-Frid Lyngstad was inducted into the Rock and Roll Hall of Fame. In 2014, she received the Eskilstuna Music Prize for her contribution as an "icon."

A well-known environmental attorney and an activist, Robert F. Kennedy Jr. has tirelessly worked for prosecuting governments and companies responsible for polluting environment and waterbodies like the Long Island Sound and Hudson River. Moreover, he has written books and articles on issues affecting the environment. Robert F. Kennedy Jr.’s work have won him prestigious awards and inspired numerous films and documentaries. 

Ali Hewson is an Irish businesswoman and activist. In the 1990s, Hewson joined the anti-nuclear movement and started working with activists like Adi Roche. In 2002, she played a key role in organizing campaigns against the Sellafield nuclear facility in England. As a businesswoman, Hewson has co-founded a skincare company and a fashion label called Nude skincare and EDUN respectively.

Charles Robert Redford Jr. is a retired actor, activist, and director. He is credited with founding the Sundance Film Festival and was named in Time magazine's list of 100 most influential people in the world in 2014. For his contributions to arts, Charles Robert Redford Jr. was honored with the Presidential Medal of Freedom in 2016.

Jane Fonda is hailed as one of the best actresses ever and has won two Oscars. She has acted in popular and acclaimed films like Barefoot in the Park, Barbarella, Klute, Coming Home, Julia, The Morning After, The China Syndrome and California Suite. She’s also known for her exercise videos and is famous for her opposition to the Vietnam War.

Bob Irwin, better known to the world as the father of legendary Australian conservationist Steve Irwin, is a conservationist in his own right. Initially a plumber, he later built the Beerwah Reptile Park, which later became Australia Zoo. Following Steve’s death, he cut all ties with the zoo.

Wangari Maathai was a Kenyan environmental, social, and political activist. She achieved popularity after becoming the first African woman to be honored with the prestigious Nobel Peace Prize. She is credited with founding a non-governmental organization called The Green Belt Movement (GBM), which focuses on women's rights and environmental conservation.

Born in American Samoa and raised in Hawaii, US Representative Tulsi Gabbard formed the environmental non-profit Healthy Hawai’i Coalition as a teenager. At 21, she was the youngest member of the Hawai‘i State Legislature. A US Army major, she later became the first Hindu to be part of Congress.

Polish actress, dancer, film producer and environmental activist Izabella Miko is noted for starring in the films Coyote Ugly and The Forsaken and in the music videos Mr. Brightside and Miss Atomic Bomb by The Killers. She debuted as film producer with Desert Dancer. She runs the eco foundation called EkoMiko and has a sustainable candle line called EkoMiko Candles.

Daniel Fredinburg was an American climate activist, Google executive, explorer, inventor, and entrepreneur. He was credited with co-inventing over 12 software technologies that were recognized and patented by Google. Daniel Fredinburg also served as the head of privacy at Google X before his untimely and tragic death caused by head injuries during an avalanche, at the age of 33.

Once regarded as one of the world’s leading experts on botany and the environment, David Bellamy was also a successful TV presenter and was a regular on BBC programs. However, he later claimed that he was shunned by the TV fraternity for his denial of the importance of climate change.

Renowned James Lovelock is best known for propagating the Gaia hypothesis, which states that every living being on planet Earth is part of a single self-regulating superorganism. He is also known for his long association with NIMR, London, and Harvard University and has over 50 patents under his name.

Canadian activist Severn Cullis-Suzuki is known for her fight for environmental issues and intergenerational justice. Born to environmentalist David Suzuki, she began her journey as an environmental activist in fifth grade. She was also honored in the UNEP’s Global 500 Roll of Honour and supports the Slow movement.

Baba Amte was an Indian activist and social worker best remembered for his work that aimed at empowering people suffering from leprosy. Dubbed the modern Gandhi of India, Amte received several prestigious awards, such as the Gandhi Peace Prize, Dr. Ambedkar International Award, Ramon Magsaysay Award, and the Padma Vibhushan.

Currently a nuclear energy advocate and industry consultant, former activist Patrick Albert Moore began his career with Don't Make a Wave Committee—a forerunner of Greenpeace—eventually being elected as its President. Later, he left Greenpeace over differences in policy and founded a PR company called Greenspirit Enterprise, developing solutions in areas of natural resources, biodiversity, energy and climate change.