GPS provides extremely accurate positioning information, and is used by the military, as well as commercial entities and ordinary people, to the point that it is now ubiquitous in society. GPS relies on a system of approximately 30 satellites. But Continue reading What If GPS Dies?
A recent report by Homeland Security establishes that a rare Geomagnetic Storm could cause substantial damage to the grid in North America and Northern Europe. The science behind the threat is that eruptions on the sun (solar storms, seen as Continue reading Geomagnetic Storm