By 2050, an estimated 10 billion people will live on earth. How are we going to provide everybody with basic needs while also avoiding the worst impacts of climate change? In a talk packed with wit and wisdom, science journalist Charles C. Mann breaks down the proposed solutions and finds that the answers fall into two camps -- wizards and prophets -- while offering his own take on the best path to survival. November 2018

Published on Nov 11, 2014, Bill Nye is William Sanford "Bill" Nye (born November 27, 1955), popularly known as Bill Nye the Science Guy, is an American science educator, comedian, television host, actor, writer, scientist, and former mechanical engineer, best known as the host of the Disney/PBS children's science show Bill Nye the Science Guy (1993–98) and for his many subsequent appearances in popular media as a science educator.

Sustainability for All: by Jonathon Porritt at TEDxExeter (June 7, 2013)

Second Nature, a national non-profit based in Boston, works to create a healthy, just, and sustainable society by transforming higher education.

Alejandro Aravena: My architectural philosophy? Bring the community into the process.

What's a marine biologist doing talking about world hunger? Well, says Jackie Savitz, fixing the world's oceans might just help to feed the planet's billion hungriest people. In an eye-opening talk, Savitz tells us what's really going on in our global fisheries right now — it's not good — and offers smart suggestions of how we can help them heal, while making more food for all.

Jacqueline Savitz is the Vice President for U.S. Oceans. Jackie’s background and training in marine biology and environmental toxicology combined with two decades of policy experience provides Oceana with a combination of sound science and clear environmental vision.

Published on May 20, 2014

The big blue buildings of Ikea have sprouted solar panels and wind turbines; inside, shelves are stocked with LED lighting and recycled cotton. Why? Because as Steve Howard puts it: "Sustainability has gone from a nice-to-do to a must-do." Howard, the chief sustainability officer at the furniture megastore, talks about his quest to sell eco-friendly materials and practices -- both internally and to worldwide customers -- and lays a challenge for other global giants.Published on Oct 21, 2013

By 2050 there will be 9 billion people on the planet - but will there be enough food for everyone? Food security expert Dr Evan Fraser guides you through a whiteboard presentation of his solution to the Global Food Crisis. See www.feedingninebillion.com for more details

Melinda Gates makes a strong argument for contraception as an international health issue.  The Bill and Melinda Gates Foundation believes all people deserve the chance to lead healthy, productive lives. The videos on this page relate to the foundation's work in global health, global development, and U.S. education. TEDx program. Visit the Foundation's YouTube channel on Global Health Stories.

Professor Bartlett explains "sustainability" in the context of the First Law of Sustainability. Problems at local, national, and global levels are all tied together with arithmetic. And our greatest shortcoming is our inability to understand the exponential function.