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...work; it is more expensive than conventional paint protection but is finding increasing use in the motor industry. Where does zinc come in our activity series? We have argued that to coat steel with a metal that does not oxidize in air makes sense, so it seems odd to use a metal that oxidizes even more readily than does iron. Zinc, like aluminium, oxidizes easily. It also...

...working on the spacecraft. Galileo’s evidence A scientific instrument onboard Galileo – the magnetometer – recorded the magnetic field in the vicinity of Europa as it performed its multiple flybys of the ice-covered moon. By reconstructing this data, scientists found that Jupiter’s magnetic field lines were disturbed around Europa, suggesting Europa itself was...