The Crystal Caverns In 1910 miners discovered a cavern beneath the Naica mine workings, the Cave of Swords. It is located at a depth of 120 m, above the Cave of Crystals, and contains spectacular, smaller (1 m long) crystals. It is speculated that at this level, transition temperatures may have fallen much more rapidly, […]
52 Hertz Whale Often described as the world’s loneliest whale, the 52-hertz whale calls out at frequency of 52 hertz a much higher frequency than the vocalizations of the most other whales. Scientists are certain that the sonic signature is that of a whale, but the exact species remains a mystery. While the whale’s movement […]
8. Germany – 2.4 million oil barrels / day – The only Western European country among the top oil consumers Loading…
