Photo: Toyota The Atmosphere Doesn’t Care Where Greenhouse Gases Come From It’s a clever ad, and a good reminder that transportation and energy production aren’t the only sources of greenhouse gas (GHG). Methane, which is copiously produced by ruminants like cows and sheep, has an effective atmospheric lifetime activity of around 21 times that of CO2, which means that every unit of methane emitted has the equivalent effect of about 21 units of CO2 per equal time interval. But is the ad literally accurate? That’s harder to deter… Read the full story on TreeHugger
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Toyota Ad from Israel Compares Emissions from Prius and… Sheep