Originally Posted by
tandempower
...Less traffic means less lane demand, which means the possibility of installing more trees medians, which is a step toward reforesting deforested areas, which absorbs sunlight instead of converting it to heat, which also helps retain ground moisture, which further cools climate and helps revitalize tree and plant growth.
As an interesting tidbit; a couple of decades ago in South Africa where there is a lot of heat and not a lot of water, the government and environmental organizations began removing trees because each full grown tree sucks up at least 100 gallons of ground water per day. This was a different kind of conservation measure.