Wherever the sensor may be, it appears to be extraordinarily sensitive. In 2014, Mouritsen and his team reported in Nature that even extremely weak electromagnetic “noise” generated by human electronic devices in urban environments may disrupt the magnetic compasses of migrating European robins. We’re not talking cell towers or high-voltage transmission lines here; more like the background buzz of everything run by electrical currents. This news caused some shock waves in the scientific world. If it’s true, this kind of “electro-smog,” as it’s known, may already be causing birds navigational
...more
