Plant more trees.

The world needs more trees and more shade.

The point of planting trees should be to create shade and by extension, reduce temperatures to create cooler microclimates, not Carbon sequestration.

Carbon sequestration may be a noble goal, but planting trees will not change the real, theorized, or imagined effects of Climate Change. It is this type of macro thinking which misses the point (and leads to inaction). Instead of always thinking on macro scales, we need to from time to time step back and think on a micro scale. Landscaping is an area we have control over and we should examine those choices, with regularity.

Do we really need that large of an open field?

On a hot sunny day, do you prefer to keep your car parked under the shade of a mature tree or in direct sunlight? Think about the last time you walked through a parking lot on a hot sunny day. If shade was available, that is probably where you walked or parked your car. Was it more comfortable walking in the shade than in direct sunlight?

Maybe you don't care about any of this. You still should make a point of planting trees if only to provide replacement stock in preparation for the eventual death of any existing tree stock. During the last 100 years, Chestnut blight, Dutch elm disease, and Emerald ash borer have killed billions of trees just within the United States. Every year, fungus, blights, bugs, weather and pollution, stress, damage and kill trees. Don't needlessly delay as it can take a new tree ten to twenty or more years before it is large enough to produce any real amount of shade.

Plant more trees.