MIT students created water bottle light bulbs that diffract natural sunlight and provide the equivalent of a 55 watt light bulb out of an empty plastic bottle, water, and a few drops of bleach. They are being installed and used in shanty towns where no natural light gets into the makeshift tin roof homes.
posted by COD
on Aug 3, 2011 -
The Happy Planet Index presents an alternative to GDP for measuring standard of living. It ranks countries by measuring life expectancy and self-reported life satisfaction against an "ecological footprint" needed to support that country's lifestyle. The press release claims that well-being is not based on high levels of consumption, but manydon'tagree. Full report in PDF here. Vanuatu tops the charts, while Zimbabwe and Swaziland lie at bottom. Critiques here, here, here, and here. A critique of happiness indices generally here.
posted by shivohum
on Jun 3, 2007 -