ThinkCycle
ThinkCycle is an academic, non-profit initiative, developed and operated by a group of doctoral students at the MIT Media Laboratory, engaged in supporting distributed collaboration towards design challenges among underserved communities and the environment.

ThinkCycle seeks to create a culture of open-source design innovation, with ongoing collaboration among individuals, communities and organizations around the world. It provides a shared online space for designers, engineers, domain experts and stakeholders to discuss, exchange and construct ideas towards sustainable design solutions in critical problem domains.

Topics covered include health, education, energy, environment, community, global action and sustainable living.

(via Nik Baerten at Pantopicon)