The idea that extraterrestrials visited Earth thousands or even millions of years before modern civilization is usually associated with ancient-alien theories rather than mainstream science. Yet researchers have asked a narrower and…
Tag: civilization
Could a powerful solar storm shut down modern civilization? Scientists have identified a serious vulnerability
A powerful solar storm would not burn people on the ground or instantly destroy every electronic device. The real danger is more indirect: modern civilization depends on power grids, satellites, GPS, communications…