Earth Trend io on Instagram: "Fun fact: The loudest sound in recorded human history wasn't man-made—it was the 1883 volcanic eruption of Krakatoa. The explosion was so cataclysmically powerful that the sound wave traveled around the globe four times, and the blast itself was heard clearly nearly 3,000 miles away (the equivalent of someone in New York hearing a noise from Dublin). The pressure wave from the eruption was so immense that it literally circled the Earth for five days, and barometers