David Holmgren, co-originator of the permaculture concept, authored *PERMACULTURE: Principles and Pathways Beyond

David Holmgren, co-originator of the permaculture concept, authored *PERMACULTURE: Principles and Pathways Beyond Sustainability*. He challenges the belief that "green tech" can enable global "sustainable consumption," asserting that diminishing oil reserves will inevitably lead to a mandatory "energy descent" for human civilization.

Holmgren advocates for permaculture principles as the most effective framework for a peaceful societal "powering down."

Governments are responsible for establishing the systems, incentives, and regulatory frameworks essential for sustainable development. While a shared vision is hoped for at Rio+20, historical

Governments are responsible for establishing the systems, incentives, and regulatory frameworks essential for sustainable development. While a shared vision is hoped for at Rio+20, historical governmental actions have often lacked courage.

Speakers include Vandana Shiva, Jonathon Porritt, Jim MacNeill, Mark Moody-Stuart, David Suzuki, Kris Gopalakrishnan, Gro Harlem Brundtland, Nitin Desai, and Achim Steiner.

Lana Revere, a 15-year-old East Coweta High School student, addresses the critical issue of water quality. She explores its seriousness from both local and global perspectives.

Passionate

Lana Revere, a 15-year-old East Coweta High School student, addresses the critical issue of water quality. She explores its seriousness from both local and global perspectives.

Passionate about preserving the outdoors for future generations, Lana aims to inspire action. Her personal interests also include playing soccer.

This talk was delivered at an independently organized TEDx event, following the TED conference format. Learn more at https://www.ted.com/tedx.

What if we took out more greenhouse gases than we put into the atmosphere? This hypothetical scenario, known as "drawdown," is our only hope of averting climate disaster, says strategist Chad

What if we took out more greenhouse gases than we put into the atmosphere? This hypothetical scenario, known as "drawdown," is our only hope of averting climate disaster, says strategist Chad Frischmann. In a forward-thinking talk, he shares solutions to climate change that exist today -- conventional tactics like the use of renewable energy and better land management as well as some lesser-known approaches, like changes to food production, better family planning and the education of girls. Learn more about how we can reverse global warming and create a world where regeneration, not destruction, is the rule.

This excerpt features Leif Wenar's January 27, 2016 speech, drawing from his book, "Blood Oil: Tyrants, Violence, and the Rules That Run the World."

Curated by Ruth Ann Barrett for

This excerpt features Leif Wenar's January 27, 2016 speech, drawing from his book, "Blood Oil: Tyrants, Violence, and the Rules That Run the World."

Curated by Ruth Ann Barrett for EarthSayers.tv, Voices of Sustainability, this piece explores themes like 'Might Makes Right.' For further details, visit the Clean Trade site: http://bit.ly/mightnotright.