"Our objective is to provide the basic infrastructure, planning and necessary management framework in creating satellite cities that reverses the current trend of unplanned development and urban congestion in most of Africa's growing cities, " says Tim Beighton, of Rendeavour, which is developing several new cities in Africa.

CNN: Africa's 'new cities': Urban future or utopian fantasies?

Many of our most successful products came out of hackathons, including Timeline, chat, video, our mobile development framework and some of our most important infrastructure like the HipHop compiler.

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Like many other tropical resort destinations, development in the Mayan Riviera happened so fast that infrastructure, the ability to treat wastewater and the legal framework to ensure environmental protection has lagged behind.

BBC: Surreal shapes in Mexico��s cenotes

The Reinvent Payphones Design Challenge dares students, technologists, designers, policy experts and urban planners, to come up with new solutions to take advantage of the existing pay phone framework and shape the future of public communications infrastructure.

CNN: Is the pay phone making a comeback?

"Rather than demand stress tests on the basis of a yet to be agreed framework, it would be better to focus on finalising the proposed rules and helping the industry put the infrastructure in place to make them work by 2013, " he said.

BBC: Europe's insurers found to be 'robust'