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Paleontologists discovered fragments of a 40‑million‑year‑old hip bone and skull belonging to a frog on Seymour Island in Antarctica. The shape of the bones revealed that the frog belonged to the Calyptocephalellidae family, which is known from South America. Today, members of this family live in the humid and warm…
A rare mineral found in nature… A metal that can conduct heat and electricity… Also a mineral… Shiny, eye-catching… Sometimes a piece of jewelry, sometimes an ornament… A symbol of wealth and power!.. In ancient times, people realized that gold was a rare and valuable substance and began to use…