A friend and I noticed it all last year in Canada, starting mid march 2017. We all noticed the sun was burning our skin much faster. Haze in the sky all year. At 3 am at night, bright white sky because of the city lights hitting the haze. We both also heard what seemed like a drone hover over the city and planes fly into re fuel. I became a plane fag last year, managed to track many strange paths around Nov 2017. Seemed to end here around December 26th but a little back in January. NOTHING since then except for one foggy day which I pray was just that, fog.