On August 27, 1883, the eruption of Krakatoa in Indonesia produced the loudest sound ever recorded in human history. At 10:02 am, a cataclysmic explosion was heard over 4,800 kilometres away, from ...

World's loudest primate, the howler monkey, can emit a call or piercing scream that can reach up to 90 decibels and be heard up to 4.8 km away ...