The World Bank has launched a competition: Apps for Climate
"This competition challenges participants to develop software applications related to climate change. The applications should serve to raise awareness, measure progress, or to help in some other way to address the development challenges of climate change. Submissions may be any kind of software application, be it for the web, a personal computer, a mobile handheld device, console, SMS, or any software platform broadly available to the public. The only other requirement is that the proposed application use one or more datasets from the World Bank Data Catalog available at data.worldbank.org or the Climate Change Knowledge Portal at climateknowledgeportal.worldbank.org."