When I was a puppy, I recall watching contrails that were only ever a few miles long behind the plane and soon dispersed. These days they are many miles long, Horizon to horizon and don't disappear, they expand and meld together to blanket the skies.

Just my observations.

When I was a puppy, I recall watching contrails that were only ever a few miles long behind the plane and soon dispersed. These days they are many miles long, Horizon to horizon and don't disappear, they expand and meld together to blanket the skys.

Just my observations.