Gas Stove Worries.

First, there is the unburned natural gas that can escape before the flame ignites or leak from a gas hook-up. The second study, conducted in the Greater Boston area, looked at the nonmethane components of unburned gas from stoves. With 40 million gas stoves across the country, Jackson and his co-authors estimate that the heat-trapping potential of the methane they discharge annually is roughly equivalent to the carbon dioxide released by half a million gas-powered cars. [Extracted from the article]

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