Dust from the Sahara blowing into Europe raises questions about its quality. This dust, carried by the wind over long distances, contains traces of radioactivity, but studies show that the isotopic signatures are not related to French nuclear tests. Although levels of cesium-137 have been detected, they remain below permissible European thresholds, which is reassuring … Continue reading The Sahara Dust That Regularly Blows Over Europe Is Radioactively Charged