I drove down Highway 1 on the California coast one day last year, the sky was crystal clear except for a couple trails for jets. By lunchtime, there were at least 7 trails north to south and maybe a couple going somewhat east and west. By 3 in the afternoon the sky wasn't even blue anymore. Most days in spring and summer, I see the same thing over my city. It's no conspiracy theory, it really is happening. Thank you for your work, we need more people like you to tell people to look up more often.