Today’s world faces major challenges crucial for human advancement, where environmental sustainability and socio-economic development are intrinsically linked. The global dimensions of environmental challenges increasingly demand a concerted, committed, and co-ordinated international response. The ITU (the lead United Nations Agency for Information and Communication Technology (ICT)) is committed to working in partnership with other organizations to contribute to the fight against climate change. GeSI has proved to be a successful forum furthering sustainable development in the ICT sector and encouraging innovative solutions to using ICTs for adaptation and mitigation. ITU is pleased to partner GeSI in this effort.