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In the early 20th century, Alfred Wegener proposed a revolutionary idea: that the Earth’s continents were once joined together, and had gradually moved apart. The idea contradicted almost everything scientists thought...
Fallen coniferous trees from 211-218 million years ago can be found scattered across the desert of eastern Arizona in the form of petrified wood. Made primarily from quartz, these geological wonders are actually fossi...
Sometimes scientists spend their time riding in a hot air balloon, driving a dog sled, hunting seals, traveling on Greenland ice masses, flying box kites in the cold arctic evenings, and thinking about jigsaw puzzles ...