This is the classic question that sent the bottled water industry into PR overdrive - Pablo's legendary analysis of the real cost of bottled water - a cost far greater than a simple carbon footprint or a plastic bottle
Please note: Due to overwhelming reader interest in this topic some of the assumptions made in this column have been adjusted. Numerous readers were kind enough to provide more accurate values for some of my previous assumptions.

Anyone inclined to celebrate Big Oil's recent misfortunes had better hold off on the champagne. For however badly the Western firms may have behaved, the new global oil barons could one day leave environmental and social activists nostalgic for the bad old days of ExxonMobil.
"Hypocrisy is the first step toward real change" -- Hunter Lovins
Man sells a tiger paw in a Chinese market. Â Part of a longer photo essay about the state of the Chinese environment. Â Not exactly uplifting but well worth passing around!
Treasure Island, the man-made lump made up of 20 million cubic yards of sea floor soil sandwiched between 287,000 tons of rock and finally glazed over with 50,000 yards of loam.
According to the base case reference scenario built into the US Energy Information Administration's International Energy Outlook 2006, worldwide electricity demand is expected to grow at a healthy average 2% per annum pace between 2000 and 2030—increasing from 400 to more than 700 quadrillion BTUs per year.
At the GreenXchange conference last Tuesday, Tadashi Maeda, the Director General of the Japan Bank for International Cooperation (JBIC), remarked, "Japan is the world leader in efficient use of resources, even though we import most of it." How do they do it?
As a child, did you ever use a magnifying glass to barbeque ants? Sizzle flies? Burn leaves? Don't worry, we won't tell. Someone who may fall into this category has found an ingenious way to harness the sun's power to make jewelry.
At the L.A. Auto Show this year, there were two separate award ceremonies for the Green Car of the Year 2008. Inside, at the "official" award ceremony, the Chevy Tahoe Hybrid was announced the winner. Outside, at an "unofficial" ceremony staged across the street, the Plug-In Toyota Prius Hybrid won the prize.