Wednesday, September 02, 2009

Not funny: The biggest threat to ozone layer is laughing gas

N2O, or "laughing gas" in the common tongue, has built up to be the greatest threat to the Earth's ozone layer. (Time) No, it's not the most potent stuff (CFCs are 60-times as damaging), but there's enough N2O (we pump the CO2 equivalent of a billion metric tons into the atmosphere annually) it's the biggest threat.

Where's it coming from? There is some naturally occurring N2O (bacteria and the oceans create it when breaking down nitrogen) but what's tipping the scale are man-made sources like fertilizer, farms (from livestock manure), sewage treatment and cars.

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I started pound360 to channel my obsession with vitamins, running and the five senses. Eventually, I got bored focusing on all that stuff, so I came back from a one month hiatus in May of 2007 (one year after launching Pound360) and broadened my mumblings here to include all science.