In her talk, Melinda Gates makes a provocative case for nonprofits taking a cue from corporations such as Coca-Cola, whose plugged-in, global network of marketers and distributors ensures that every remote village wants — and can get — a Coke. Why shouldn’t this work for condoms, sanitation, vaccinations too?

Internet activist Julian Assange serves as spokesperson for WikiLeaks, a controversial, volunteer-driven website that publishes and comments on leaked documents alleging government and corporate misconduct.

FLA head Auret van Heerden talks about the next frontier of workers’ rights — globalized industries where no single national body can keep workers safe and protected. How can we keep our global supply chains honest? Van Heerden makes the business case for fair labor.

Human growth has strained the Earth’s resources, but as Johan Rockstrom reminds us, our advances also give us the science to recognize this and change behavior. His research has found nine “planetary boundaries” that can guide us in protecting our planet’s many overlapping ecosystems.

Pushing his body through epic cold-water swims, Lewis Gordon Pugh wants to draw attention to our global climate. He’s just back from swimming in a meltwater lake on the slopes of Mount Everest.

Chef Arthur Potts-Dawson shares a vision for reducing wastage from restaurants and supermarkets. Thus improving recycling, composting and creating sustainable engines.

Blogger Ethan Zuckerman, talks about his analysis on social network like Twitter in terms of trending traffic and topics.

David Bismark demos a new system for voting that contains a simple, verifiable way to prevent fraud and miscounting, while keeping each person’s vote secret.