AM radio from a hand-wound coiland an oxidized British penny

Many thanks to SWLing Post contributor, Paul Evans, who shares the following video and article via Hackaday: There's been a spate of apocalypse related articles over the last few weeks, but when I saw an AM radio made from a hand-wound coil and an oxidized British penny, I couldn't help but be impressed. We've covered foxhole radios, stereotypical radios that ["]