A dust cloud measuringÂ began to drift across the Atlantic last week. It’s a development that could stall the formation of dangerous tropical storms in what’s expected to be an active season, at least for the time being.
Two years ago, a severe storm in Argentina produced hailstones reaching 23 centimetre wide, prompting meteorologists to propose an entirely new term: “gargantuan hail.” Scientists don’t fully understand how such enormous balls of ice can take shape, but the 2018 storm is providing some tantalising new clues.
Sprawling towers of dust can reach heights of 80 kilometres during global-scale dust storms on Mars, according to new research. Acting like a space elevator, the phenomenon might explain how water escaped from the Red Planet during its ancient past.