Earth
Tiny magnetic waves have been discovered in Earth鈥檚 core
Fluctuations in Earth鈥檚 magnetic field that repeat every seven years can be used to probe the inner workings of our planet
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Fluctuations in Earth鈥檚 magnetic field that repeat every seven years can be used to probe the inner workings of our planet
Ice was mysteriously found below the crater of Hawaii's Mauna Kea 50 years ago, but was soon forgotten. Alice Klein joins a search for clues to ice on Mars