content: Holy fuck that's a complicated science topic that I'm not an expert on but I'll give it a shot...  Something to do with shooting radio waves into the ionosphere in a way that arcs them around to any point in the same hemisphere of the globe, and they focus them on a point to heat up the atmosphere in that spot to manipulate the weather.  They can also trigger earthquakes, I guess by focusing it underground.  There have been reports (and images/video if you search for them) of strange auroral anomalies in the sky just before earthquakes.    Research HAARP to learn more.