"The Hindustan Construction Corporation (HCC) is building the city based on biomimicry: the idea that the best design can be borrowed from nature. The company hopes to complete phase 1 construction by the end of 2010, and the city of 25,000 acres will eventually be home to 300,000.
The city is being built using concepts of walkability and community‐centered town planning. While Lavasa is being marketed to high‐income Mumbaikers, HCC claims that the city will include people from all socioeconomic backgrounds, though measures to include the urban poor have not been specified."

"Under the initial national pilot program the Government of Vietnam chose 11 communes to develop and create as ‘new rural areas’... The aim of the project is two-fold. It aims to create better, more developed rural areas and at the same time, it aims to organize economic sectors and the livelihoods of those that live in these rural areas."
"The relative success of the pilot has led to the Government announcing in August of 2010 the plans for developing all rural communes across the Vietnam in 2010-2020....The project has been extended to cover the entire country over the next decade,"

A nano 'tea bag' can purify up to a liter of dirty water, and this lightweight, biodegradable technology could help tackle water sanitation in areas without clean water systems.

The South Africa Node writes,

The PeePoo bag safely decomposes human waste and produces valuable fertilizer.

The South Africa Node writes,

Communities in Malawi are building composting toilets that, combined with fire ash, turn manure into usable fertilizer. Diarrhea is the leading killer in Malawi, and sanitation solutions of this sort are deeply impactful for public health and for community resources.

The South Africa Node writes,