The chemtrail/HAARP/nanoparticle/et cetera "weather control" crowd has had a festive week with many  publications writing about this topic. So, let me make a few comments in the -- probably futile -- hope of providing some explanations about what people are seeing and cooling the controversy.  The photo below shows three jet condensation trails ("contrails") crossing over a location. The contrails are mostly ice and tiny bits of jet fuel that was not completely burned. Why do they cross? Most of the time, airliners fly jetliners fly "air routes." These are set "highways" in the sky (yes, there are maps that show them) that intersect over navigation devices known as VORTACS. That's why you see contrails crossing. Sample air route chart. The three edged symbols are the VORTACS. There was a comment to an article on this topic from a man born in 1963 who said,  "there weren't this many contrails when I was a kid."  Correct! The firs...

I get asked about cloud seeding all of the time and I haven't had much new to tell people in recent years. So, I'm grateful to the Washington Post  for a really interesting article on the topic. The bottom line is that it is finally proven that cloud seeding works in certain circumstances .  Snowed-over experimental radar equipment NCAR photo There are two big qualifications: It is only proven it works in stratiform-type precipitation in mountain areas. We still don't know for certain whether it works with thunderstorms or in areas outside of mountains.  The increase of 3.3% is over what would have fallen anyway. In other words, if you don't have precipitating clouds, cloud seeding will not help. Still it is a significant scientific advance to know for sure that cloud seeding works in those circumstances.