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Growth lines and isotopes in one giant clam shell from Jiigurru put northern Great Barrier Reef summers around 1800 at 0.9 to 1.2C cooler than in 1995-2015. Winters were nearly unchanged, so this site's warming has come mostly in the hot season, on the evidence of one animal.
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Researchers revisiting a 1980s Victorian trial found heavily thinned mountain ash stored as much wood carbon as unlogged forest, or more, after 30 years. That gives the protect-or-clearfell argument a tested middle option, on evidence from one site that counts only carbon in wood.
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Cosmologists' simulations suggest primordial magnetic fields may have sped hydrogen formation, shifting the 67 km/s/Mpc rate read from the CMB. That gives the 6 km/s/Mpc Hubble tension a physical cause.
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Researchers say two 5th-century BC Etruscan tombs were built as immersive sensory spaces, citing exceptionally long echoes in one of them. Their own account leaves open whether the sound was designed or simply came with the room.
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Researchers who interviewed 45 knowledge workers and read their AI chats say asking AI to challenge ideas improved performance. The study has no comparison group, so it documents the habit without measuring whether it guards against the skill erosion linked to heavy AI use.
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Australian bee researchers say only three of the country's more than 1,700 native bee species are on the national threatened species list. Their review blames thin research funding for the missing data and sets out a conservation plan built on behaviour studies and long-term monitoring.
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Researchers analysing Vancouver's bike-share trips estimate that about 18 shared bikes, at current use, cut as much exhaust as removing one fossil-fuel car. The number falls as each bike replaces more car trips, so the gain rests on short trips people would otherwise drive.
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Researchers screening hundreds of thousands of simulated futures in Nature Geoscience find Antarctica loses ice on net this century, even at 1.5C of warming. In the runs that survive, extra snowfall does not outweigh the loss, so Antarctica adds to sea-level rise this century.
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Atlantic City's water in the late-September nor'easter hit its highest level since Superstorm Sandy in 2012, as peak surge met a full-moon high tide. A storm researcher calls the El Niño outlook unclear, but rising seas alone will make equally strong storms more damaging.
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Osaka's ground is rising about 4 millimetres a year on average, and up to 12 in places, after Japan's early-1960s curbs on groundwater pumping. At that average pace, regaining the 2 metres or more some districts sank would take at least 500 years.
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Researchers reviewing East Antarctica's Wilkes Subglacial Basin say its ice would raise seas 3 to 4 metres if it all melted. The basin shrank sharply in past climates 2 to 3 degrees warmer, yet too little ocean data exists to project how fast it could retreat now.
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Australian grain growers should treat frost as a growing El Nino risk, a phys.org analysis argues after frost killed highland crops in Papua New Guinea. The frost physics behind the warning holds up, but the claim that the risk is growing is harder to check.
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Geoscience Australia's public Sentinel-2 tool maps vegetation moisture at 20-metre resolution about every five days. In the ACT, rated normal risk by the national outlook, it showed a dry south and faster drying than in most recent years.
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AI agents from OpenAI, Anthropic and Google that hacked eight companies in 2026 were chasing goals set without limits, a technology law scholar argues. That puts responsibility on agent makers, users who hand over credentials, and sites with weak APIs.
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Fewer elk let trees regrow in only parts of Yellowstone, a phys.org essay argues, far short of the wolf-driven cascade in a video seen 46 million times. Reintroductions sold on that version promise more than Yellowstone delivered.
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Civil engineers are developing drone-carried electromagnetic surveys to find thawed permafrost in Alaska, where thaw damage could reach $51 billion. The surveys show crews where to look closely before drilling, though their depth estimates are still uncertain.
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Black Dog Institute researchers found school connectedness was the only school factor linked to better wellbeing two years later in over 1,500 NSW students. The data are observational and self-reported, so belonging is a strong candidate for a wellbeing lever that schools still need to test.
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Yemen's Houthis are advancing on Bab al-Mandab, the strait carrying 87% of Eritrea's maritime trade by value and US$520 billion of China's a year. Share and dollar value rank the exposed countries differently, and the researchers' US$30 billion estimate for a 30-day blockade is a global total.
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Towards Indigenous Pay Parity researchers find Indigenous Australians earn 15.9% less per hour, with only 27% of the gap explained by lower-paid jobs. About 70% persists among comparable workers, so the occupation map mainly tells employers where to audit pay and promotion within roles.
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Crystals in lava from La Palma's 1712, 1971 and 2021 eruptions show hot mantle magma stirring a mush 18 to 25 km down days or weeks before each one. The authors say that record helps read future unrest at depths monitoring networks struggle to see, though it cannot date the next eruption.
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