SpaceThe moon may never actually have had a strong magnetic field We used to think that the moon had a strong magnetic field like Earth's, but a new analysis of rocks collected by the Apollo missions suggests that previous signs of magnetism came from asteroid impacts instead News
TechnologyPlants that suck metals from the soil can be farmed to make our tech Farms that grow metal-rich plants are cropping up around the world and promise a greener, less destructive alternative to mining for rare minerals Features