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Fossils reveal a massive shark that ruled Australia in dinosaur times

Around 115 million years ago, northern Australia’s seas hosted a colossal shark that rewrites what we thought we knew about early ocean predators. New fossil discoveries show that modern-type sharks were experimenting with gigantic sizes far earlier than scientists believed, competing with the marine “monsters” of the dinosaur age. Source: All Top News — ScienceDaily

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NASA Awards Liquid Hydrogen Supply Contracts

Credit: NASA NASA has selected Plug Power, Inc., of Slingerlands, New York, and Air Products and Chemicals, Inc., of Allentown, Pennsylvania, to supply up to approximately 36,952,000 pounds of liquid hydrogen for use at facilities across the agency. The NASA Agency-wide Supply of Liquid Hydrogen awards are firm-fixed-price requirements contracts that include multiple firm-fixed-price delivery

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Anthropic’s Claude Opus 4.5 is here: Cheaper AI, infinite chats, and coding skills that beat humans

Anthropic released its most capable artificial intelligence model yet on Monday, slashing prices by roughly two-thirds while claiming state-of-the-art performance on software engineering tasks — a strategic move that intensifies the AI startup's competition with deep-pocketed rivals OpenAI and Google.The new model, Claude Opus 4.5, scored higher on Anthropic's most challenging internal engineering assessment than

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NASA’s 2025 Astronaut Candidates: Shaping Artemis Exploration 

5 Min Read NASA’s 2025 Astronaut Candidates: Shaping Artemis Exploration  NASA’s Johnson Space Center Director Vanessa Wyche introduces the agency’s 24th astronaut class on Sept. 22, 2025. Credits: NASA/James Blair When NASA’s 2025 astronaut candidates arrived at the agency’s Johnson Space Center in Houston this fall, they stepped into history, sharing a common mission to

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NASA Astronaut Chris Williams, Crewmates Arrive at Space Station

The Soyuz rocket launches to the International Space Station with Expedition 74 crew members: NASA astronaut Chris Williams, and Roscosmos cosmonauts Sergey Kud-Sverchkov and Sergei Mikaev, on Thursday, Nov. 27, 2025, at the Baikonur Cosmodrome in Kazakhstan.NASA/Bill Ingalls NASA astronaut Chris Williams, accompanied by Roscosmos cosmonauts Sergey Kud-Sverchkov and Sergei Mikaev, safely arrived at the

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Half of heart attacks strike people told they’re low risk

The study reveals that widely used heart-attack risk calculators fail to flag nearly half of those who will soon experience a cardiac event. Even the newer PREVENT model misclassifies many patients as low-risk. Since most people develop symptoms only within 48 hours of their heart attack, current screening offers little time for intervention. Researchers say

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NASA Astronaut Chris Williams, Crewmates Arrive at Space Station

The Soyuz rocket launches to the International Space Station with Expedition 74 crew members: NASA astronaut Chris Williams, and Roscosmos cosmonauts Sergey Kud-Sverchkov and Sergei Mikaev, on Thursday, Nov. 27, 2025, at the Baikonur Cosmodrome in Kazakhstan.NASA/Bill Ingalls NASA astronaut Chris Williams, accompanied by Roscosmos cosmonauts Sergey Kud-Sverchkov and Sergei Mikaev, safely arrived at the

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