Meteorites, Plate Tectonics, & Earth’s Age Meteorites are fascinating relics of a universe in transition. They are also the most important clues for determining Earth’s exact age. Meteorites fall to Earth all the time, and […]

Meteorites, Plate Tectonics, & Earth’s Age Meteorites are fascinating relics of a universe in transition. They are also the most important clues for determining Earth’s exact age. Meteorites fall to Earth all the time, and […]
March More than two centuries ago, cargo ships released freshwater ballast from the Ural region of Russia into the rivers and lakes of western Europe. That ballast contained tiny striped hitchhikers. In the 1820s, Londoners […]