Portal:Earth sciences/DYK/1


 * ...that Ojos del Salado (pictured) is the highest volcano on Earth?
 * ...that the Toronto Magnetic and Meteorological Observatory was originally built to study fluctuations in Earth's magnetic field?
 * ...that Atlantic hurricane reanalysis is an ongoing project within the National Oceanic and Atmospheric Administration which seeks to correct and add new information about past Atlantic tropical cyclones?
 * ...that Robert Case, a National Weather Service meteorologist, dubbed the 1991 Halloween Nor'easter "The Perfect Storm"?
 * ...that the 1912 Novarupta eruption of Mount Katmai was the largest of the 20th century?
 * ... that the North geomagnetic pole is not the same as the magnetic North Pole, and that a compass points at neither?

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