Anything we plant - anything green - helps take up CO2 -- plants convert CO2 to sugars and produce oxygen -- that conversion is why there's life on Earth. Perhaps our local planting efforts are minor, but all of us that garden DO collectively have a positive effect. Green spaces instead of asphalt, adding trees, shrubs, and perennials -- this adds up as an antidote to urban/suburban heat islands.
But it seems like it's time to actively promote greening our communities, new residential areas, commercial developments, etc. Certainly this has been important for awhile, but why not step up our efforts?
The largest city near us -- Greenville, SC -- is having a difficult time passing a tree ordinance. Our traditional 'don't tell us what to do with our property' stance in SC has emerged. But, really, trees vs. asphalt? Which is better for us?