An eco-friendly way to cool big trucks More than 7 percent of the U.S.'s daily oil consumption is attributed to heavy-duty truck idling, according to estimates. Many truckers, while resting at truck stops, idle their engines in hot weather to cool their cabs. But now a company has developed an eco-friendly cooling device that works with the engine off.
How to measure your 'water footprint' Most people by now will be familiar with the term 'carbon footprint' and may even have calculated it themselves, but how many are familiar with their 'water footprint'?
Meltdown: A global warming travelogue For a long time -- the first 15 years that we knew about global warming and did nothing -- there were no pictures. That was one of the reasons for inaction.