Cartoon of the Earth with cutaway showing the mantle and inner and outer core. Magnetic field lines produced by the geodynamo extend into space and interact with the solar wind. The iron-rich core at ...
Cartoon cross section of the Earth showing the mantle, outer core and inner core. Convection in the outer core produces Earth's geomagnetic field. The properties of Earth’s iron-rich core are key to ...
Join 350,000+ subscribers and keep yourself informed with a selection of The Week’s most interesting, enlightening and entertaining stories - plus daily puzzles. From our morning news briefing to a ...
Happy Earth Day! Each April 22, Earth Day marks the anniversary of what many consider the birth of the modern environmental movement in 1970. The idea came to founder Gaylord Nelson, then a U.S.
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