Backyards May Play Role in Climate Change
Each year, American tailpipes and smokestacks spew more than 5 billion tons of carbon dioxide into the atmosphere. About half of that stays in the air, where it contributes to global warming. The rest is soaked up by oceans, plants and soil. Scientists studying neighborhoods in Baltimore are now trying to figure out whether backyards are also helping absorb some of this gas, and by so doing, slowing the pace of climate change.
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