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World’s largest particle smasher halts for upgrade to boost hunt for dark matter

The world’s most powerful particle accelerator will shutter operations Monday for four years of renovations to dramatically boost its collision capacity and the potential for unlocking one of the greatest mysteries of the universe: dark matter.

The Large Hadron Collider (LHC)—a 27-kilometer (17-mile) proton-smashing circular tunnel at the heart of Europe’s physics lab CERN near Geneva—has most famously been used to prove the existence of the Higgs boson, dubbed “the God particle.”

In the tunnel, running about 100 meters (330 feet) below the French-Swiss border area, superconducting magnets and accelerating structures propel particles to extreme energies and then smash them together at phenomenal speeds.

Physicists Solve a “Quantum-Only” Problem Using an Ordinary Laptop

A problem once touted as requiring a quantum computer has now been solved on a laptop.

Using advanced mathematical techniques and sophisticated software, physicists at the Center for Computational Quantum Physics (CCQ) at the Simons Foundation’s Flatiron Institute and collaborators at Boston University showed that a conventional computer can successfully simulate a notoriously difficult quantum system previously claimed to be beyond the reach of classical computing.

Apple Patches 30+ iOS, macOS, Safari Flaws, Including AI-Discovered WebKit Bugs

The four vulnerabilities are part of nearly 30 vulnerabilities that have been patched in WebKit, an open-source web browser engine developed by Apple. Others include a use-after-free issue in WebKit Canvas (CVE-2026–43720) and a vulnerability that could be exploited by a malicious website to process restricted web content outside the sandbox (CVE-2026–43725).

Apple has also remediated three bugs that could be exploited by a malicious app to leak sensitive kernel state (CVE-2026–43722), cause unexpected system termination or write kernel memory (CVE-2026–43724), or corrupt kernel memory (CVE-2026–39868). Security researcher Hyunwoo Kim, who discovered Dirty Frag, has been credited with discovering and reporting CVE-2026–43724 and CVE-2026–43722.

The updates are available for iOS 26.5.2, iPadOS 26.5.2, macOS Tahoe 26.5.2, and Safari 26.5.2. None of the patched vulnerabilities has been disclosed as actively exploited in the wild.

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