The world's largest waterfall is actually underwater, located in the Denmark Strait between Greenland and Iceland, where cold, dense water from the Nordic Seas sinks beneath warmer water, creating a massive underwater waterfall nearly two miles high, as identified by NOAA.
Trillions of cicadas from two broods, Brood XIX and Brood XII, are set to emerge in the midwestern and eastern United States, creating a rare spectacle not seen in centuries. This natural wonder, dubbed "cicada-geddon" or "cicada-palooza," will see the insects making a loud appearance in as many as 16 states, with their songs collectively louder than a revving motorbike. While some are planning trips to witness the event, others are concerned about the impact of global heating on the cicadas' natural cycle. Nonetheless, experts advise people to sit back and enjoy the spectacle, as it will be over soon enough.