Some "all you can eat" buffets in China discourage taking more than you can eat: they fine diners for wasted food, based on weight of discards.
Researchers at Stanford University calculate that 3 jetliners flying in V formation (like geese) would save 15% of fuel costs on long trips. NY Times http://nyti.ms/d0t3WL
Energy consumption is voluntarily constrained if users have easy access to real-time usage data. Google PowerMeter is one step towards smarter energy monitoring.http://bit.ly/aePLuF
Portable wind generator is useful in remote areas or during emergencies.http://bit.ly/5o700p
Bill Gates makes the argument that short-term interventions (30% reduction of emissions by 2025) is possible, but not very meaningful. We need 80% reductions by 2050, which requires a completely different approach. http://bit.ly/85pVOp
Cement embedded with titanium dioxide will oxidize hazardous pollutants such as nitrogen oxides and sulfur oxides. A NYTimes "best idea 2007" winner.http://bit.ly/7vLkki
UPS shaved 28 million miles per year by optimizing delivery routes, including avoiding most left turns. A NYTImes "best idea 2007" winner. http://bit.ly/7GRmGp
It is always windy 1000 feet up. A blimp / wind turbine can be deployed anywhere. NYTimes "best idea 2007" winner. http://bit.ly/7OplX3
A careful review of the food chain from seed to table finds many points where food is wasted for capricious reasons. Prospect Magazine http://bit.ly/88kDNx
Roof tiles made by Tru2Earth are recycled from plastic bottles and designed to collect rain water. A Cleantech Open 2009 winner. http://tru2earth.com.
MicroMidas technology converts carbon in organic wastewater into bio-plastics. A "Cleantech Open" winner 2009. http://www.micromidas.com.
Minicattle, weighing only half as much as regular cattle, are twice as productive per acre of land. NYTimes "best of 2008" idea. http://bit.ly/5EYH7w
Because kangaroos don't produce methane gas like cattle and sheep, kangaroo meat is much more environmentally friendly. NYTimes "best of 2008" idea. http://bit.ly/3dbZrZ
Plastic is made from urea, which typically comes from fossil fuels. It can instead be economically captured from urine at pig farms, which theoretically produce enough to meet all US plastic needs. Popular Science "Best of 2008" selection.http://bit.ly/5AdeL8