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Scientists have found an explanation for a 'gravity hole' in the Indian Ocean. A gravity hole is an area where gravitational pull is low, causing the seafloor to sink. Deep beneath the ocean, there is one that is three million square kilometers in size and previously it has confused scientists. Now two researchers from the Indian Institute of Science, Debanjan Pal and Attreyee Ghosh, think they have solved the mystery. More than 1,000 kilometers (621 miles) beneath Earth's crust, they found cold, dense remnants of an ancient ocean plunged into a 'slab graveyard' beneath Africa some 30 million years ago, stirring up hot molten rock. Sign up to our free Indy100 weekly newsletter Pal and Ghosh retraced the formation of the massive geoid by modeling how tectonic plates skimmed over Earth's mantle for the past 140 million years. They ran simulations and compared the shape of the oceanic low those models predicted with observations of the dent itself. The models that reproduced the Indian Ocean geoid low in its current form all had one thing in common: plumes of hot, low-density magma wafting up beneath the low. These plumes, as well as a distinctive mantle structure, are what created the geoid low; if they rise high enough, Pal and Ghosh reckon. "In short, our results suggest that to match the [shape and amplitude of the] observed geoid low, plumes need to be buoyant enough to come up to mid-mantle depths," the pair wrote. The first of these plumes appeared about 20 million years ago, to the south of the Indian Ocean geoid low, and around 10 million years after the old Tethys Sea sank into the lower mantle. As the plumes spread beneath the lithosphere and inched towards the Indian peninsula, the low intensified. But more research needs to be done to work out what is really going on as not all scientists are convinced. Science is crazy. Have your say in our news democracy. Click the upvote icon at the top of the page to help raise this article through the indy100 rankings.

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A popular left-wing Twitter account with thousands of followers, which often went viral and provoked the outrage of leading conservatives, may have been a fake all along, according to online researchers, using a provocative posts to generation attention in a tactic known as “rage-baiting.” Erica Marsh, a self-proclaimed “proud Democrat” from Washington, started her Twitter account in September of 2022, and quickly gained more than 130,000 followers, sometimes netting over 1,000 followers a day posting her quick-twitch takes on the day’s main political news. Her messages often read like a near-parody of an over-the-top, out-of-touch progressive. In a 29 June post, reacting to the recent Supreme Court decision striking down race-based affirmative action in college admissions, she wrote, “Today’s Supreme Court decision is a direct attack on Black people. No Black person will be able to succeed in a merit-based system which is exactly why affirmative-action based programs were needed. Today’s decision is a TRAVESTY!!!” The tweet quickly caught fire online, provoking the ire of leaders like Florida congressman Matt Gaetz, who told his followers, “I strongly disagree with this racist allegation.” However, despite her ability to win followers and stir the pot and attract online attention, Ms Marsh may never have been real, according to an analysis from The Washington Post. Ms Marsh doesn’t appear in phone or voting records, and past employers she claimed like the Biden campaign say they have no record of her. “I strongly suspect that this person doesn’t exist,” John Scott-Railton, a senior researcher at the Citizen Lab at the University of Toronto, told the paper. “It’s as if she dropped from the moon and arrived fully formed with this narrative that makes liberals look like idiots.” Twitter officially does not comment on press requests, and Ms Marsh’s account has been suspended. Before buying the social media site last year, Elon Musk argued fake accounts were a serious problem on Twitter, at one point threatening not to carry out his acquisition over the matter. Twitter said last July it removes over 1 million fake accounts per day. Fakes have been a persistent issue. In November, the company temporarily suspended its Twitter Blue subscription service, after users bought Twitter verification status and used it to impersonate celebrities, politicians and brands. Read More ‘Rate limits’ and Twitter chaos: What exactly is Elon Musk doing? Elon Musk supports eliminating voting rights for people without children Greg Abbott mocked after falling for hoax story about Garth Brooks being booed off stage Judge blocks Biden agencies from communicating with social media platforms Elon Musk supports eliminating voting rights for people without children Outrage erupts in South Africa over video of deputy president's security officers stomping on man