Thanks to Kino for alerting us to the 20mSv ploy. As a quondam radiochemist, I appended an inspired comment to the petition (which I'm sure no one will ever read). The comment about HAARP: > Meanwhile I wish we had more stamina to study the greater situation. > How does one verify claims that HAARP is messing with things: > <http://presscore.ca/2011/?p=3D2261> > <http://presscore.ca/2011/?p=3D1624> suggests that one might consider the conservation of angular momentum. Plate tectonics is driven by convection of the mantle, removing heat from the core and delivering it to the crust, and involving the ponderous circulation of a large percentage of the earth's mass. This has been happening for 4 billion years, and is not going to be affected by anything humans do. It is slowing down with the 4.5-billion-year half-life of uranium-238, but the sun will go red-giant and melt the earth before the mantle stops turning over. The Pacific plate has not suddenly started moving (as some suggest); the recent cluster of serious quakes around its rim is a minor statistical anomaly in the billion-year process. If we want mountains, scenery, ski slopes, views of Mt Fuji, orographic rain, storage of water in snow packs, and other good things associated with topographic relief, we have to live with the earthquakes and vulcanism that create the relief. Without mantle convection, and a perfectly spherical earth, we'd all still be fish.