On a related note, when a 10^19 or above event hits a densely populated area, there's a decent sized ionization column near the center of the shower

On a related note, when a 10^19 or above event hits a densely populated area, there's a decent sized ionization column near the center of the shower that could likely lead to cancer. Theres probably 100 to 1000 or so events like that in an area the size of the Bay Area. Ha! Oh man. That'd be the best alert a smart phone could ever show me. *beep* You've just been irradiated by powerful cosmic rays from outer space. Your risk factor for certain forms of cancer has increased by 0.013%. I really would want to know if I was suddenly showered by cosmic rays, and my location within the crowd-sourced area-of-effect, but I wonder if an app could transmit it's sensor noise to a central server, and receive accurate results aggregated from all other app instances very quickly. I figure there'd be a lag of maybe a couple of hours or more. Reminds me of this other site, which provides air quality stats: https://plumelabs.com https://plumelabs.com