Wide-field imaging in mice resolves state-dependent cortical blood-volume dynamics and reveals a REM-sleep paradox, where blood volume and astrocytic pyruvate rise while neuronal ATP falls, uncovering a dissociation between supply and consumption.
Get the latest international news and world events from around the world.
Quantum computer completes verified task beyond practical reach of classical simulations
IBM and researchers from the University of Chicago announced a demonstration in quantum computing that meets the fundamental criteria for “quantum advantage”—the point where quantum computers can be confirmed to have outperformed classical computers on trusted computations.
The collaboration said its system had performed computations beyond the reach of leading classical simulation methods while providing confidence that the computation returned accurate results.
In their new paper, the researchers showed that these two goals could be achieved through a novel construction of encoded quantum circuits—one of the largest demonstrations of logical quantum computing to date. The paper is published on the arXiv preprint server.
How the Department of War Is Rebuilding Its Innovation Edge
Chuck Brooks is the president of Brooks Consulting International and one of Executive Mosaic’s GovCon Experts.
The United States is about to enter a new age of technical competitiveness where the rate of innovation and invention could have just as much of an impact on national security as the technology itself. Emerging technologies such as directed energy, biotechnology, autonomous systems, robotics, advanced manufacturing, artificial intelligence and quantum computing are developing concurrently and rapidly converging.
This convergence is posing a fundamental dilemma for the Department of War: Can the government organize itself to find, develop, buy and field new technology at the same rate as the business sector and America’s adversaries? A major reorganization of the Department’s research, technology and innovation ecosystem is starting to reveal the solution.
AI Cybersecurity Access Tiers: Who Gets The Best AI?
OpenAI’s new Daybreak Red tier gives approved defenders a model that completes 95% of advanced exploit-development requests, versus roughly 2% for the public version of the same base model. That gap is now the real story: AI cybersecurity access tiers decide who gets frontier defensive power and who doesn’t, and access runs through a partner list, not a price tag.
AI cybersecurity access tiers stopped being a theoretical debate this month. OpenAI expanded its Daybreak program into two levels, Blue and Red, and released GPT-5.6-Cyber, a specialized model built specifically for vulnerability research and exploit-chain development, according to SecurityBrief’s coverage of the launch. In an internal OpenAI evaluation, the new model completed 95.0% of advanced cyber requests covering authentication bypass, privilege escalation, and exploit-chain development, compared with 1.5% for the general-release model and 2.0% for that same model through the safeguarded Daybreak Blue tier.
GPT-5.6-Cyber is only available through Daybreak Red, gated behind identity verification, monitoring, legal attestations, and approved-use restrictions, per Cyberpress’s reporting. Under OpenAI’s own Preparedness Framework, the model was rated “High” for cybersecurity capability, one step below the “Critical” threshold that recently triggered an internal suspension of a different unreleased model, Astra, on August 7. These AI cybersecurity access tiers exist because the underlying capability is real: a general-purpose model built to refuse exploit-writing requests is far less useful to a security team validating a patch than one built to complete them.
