'Old Person Smell' Is Real, And Science Will Dictate Whether It Happens To You - HuffPost

A day on Earth is no longer linked to the rising and setting of the sun after the world's timekeepers voted to get rid of the leap second. Since the 1970s, leap seconds have been added to global clocks 27 times, to keep atomic time in sync with Earth's daily rotation, which has slowed over billions of years. On such occasions clocks would pause for a second at 11:59:59 on New Year's Eve to allow the Earth's rotation to catch up with atomic time – which is set by the steady tick of electrons rather than planetary movement. The last one happened in 2016. But on Thursday afternoon, the General Conference on Weights and Measures in Paris approved a resolution to allow the difference between civil time (what people set their clocks to) and solar time to increase from one second to one hour. It means that there will be no more adjustments to clocks until the difference between a solar day and a 24-hour Earth atomic day has slipped by 60 minutes – a few thousand years from now.

Lawrence Livermore National Laboratory researcher Isaiah Santistevan led the development of three-dimensional simulations exploring how a nuclear device could deflect or disrupt an asteroid threatening Earth. Credit: Blaise Douros/LLNL Lawrence Livermore National Laboratory (LLNL) researchers are developing three-dimensional simulations to examine how a nuclear device could be used to deflect or potentially disrupt an asteroid threatening Earth.

Orcas are hunting great White Sharks around the world, scientists confirmThe killing of great whites by orcas has been reported in the waters of South Africa, California, and Australia, and the implications that the hunting behaviour would have on the marine ecosystem have been considered. In fact, it all started back on May 3, 2017, when the body of a female great white, weighing 1,100 kilograms, washed ashore in Gansbaai, close to Cape Town, with a deep gash through which its 90-kilogram liver had been extracted. Five more corpses of great whites appeared with similar wounds in the coming months, as claimed by shark biologist Alison Towner of Rhodes University. Two adult males, called Port and Starboard, who are supposed to be brothers judging by their dorsal fins that fold differently, were identified as the most probable perpetrators. The connection was officially established in 2022 based on video footage of a drone that caught three orcas chasing and biting a 3-meter great white off Mossel Bay. The sharks quickly disappeared from Dyer Island, one of the best places in the world to witness a great white.