MIT has a project to focus collaboration on addressing climate change. Check out the website. There are a bunch of proposals and conversations that are very interesting.

Objective

The goal of the Climate CoLab is to harness the collective intelligence of thousands of people from all around the world to address global climate change.

Inspired by systems like Wikipedia and Linux, the Massachusetts Institute of Technology (MIT) Center for Collective Intelligence has developed this crowdsourcing platform where citizens work with experts and each other to create, analyze, and select detailed proposals for what to do about climate change. 

Approach

Anyone can join the Climate CoLab community and participate. Community members are invited to submit and comment on proposals outlining ideas for what they think should be done about climate change. In some contests, members create proposals for specific kinds of actions such as generating electric power with fewer emissions or changing social attitudes about climate change.  In other contests, members combine ideas from many other proposals to create integrated climate action plans for a country, a group of countries, or the whole world. Experts evaluate the entries and pick finalists, and then both experts and community members select the most promising proposals. For more, see Contest phases. Read More→