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Stanford researchers discovered that the front brain (forebrain and midbrain) and the back brain (hindbrain) arise from two distinct types of progenitor cells during embryonic development, rather than a single shared lineage as previously assumed. The finding, observed in both mouse embryos and human cells grown in dishes, was identified through markers OTX2 for the front brain and GBX2 for the back brain.
Abhishek Fatehpuria, Robinhood's VP of Product Management for Brokerage, will speak at TechCrunch Disrupt 2026, held October 13-15 in San Francisco, on a session titled 'Winning the Modern Financial Consumer.' He will discuss how Robinhood has expanded from commission-free stock trading into banking, credit, crypto, retirement products and prediction markets, reflecting the company's growth to 28.6 million funded customers and $384 billion in platform assets as of August 2026.
A team of three mathematicians has finally proven the 2004 'sandwich conjecture,' which claims that any sufficiently large graph of interest can be mathematically bounded above and below by two simpler, well-understood random graphs. The proof, completed in 2025, resolves a two-decade-old open problem in graph theory by pushing existing mathematical techniques to their limits.
A hobbyist without formal mathematics training says he spent a month working with a frontier AI model to produce a machine-checked proof of a 50-year-old conjecture by John Conway concerning omnific integers within the surreal number system. The proof addresses a refinement property Conway posed, stating that if ab equals cd, there exist integers satisfying a specific factorization relationship. The proof passed automated verification through the Palomar registry, and some experts familiar with Lean and the field have reviewed the underlying statement.
An amateur mathematician spent a month using a frontier AI model to attempt a formal Lean proof of John Conway's refinement conjecture about omnific integers in surreal number theory, a problem posed 50 years ago. The proof reportedly passed mechanical verification through the Palomar registry, and some Lean and field experts said the statement appears correct, though full independent mathematical verification is still pending.
Texas Republican Chip Roy said on CNBC's Squawk Box that while he opposes government regulation of AI as a free-market conservative, he believes Congress should hold hearings where AI company executives explain their safety practices. Roy, who is leaving the House after losing his bid for Texas attorney general, recently joined an unusual bipartisan coalition including Bernie Sanders and Steve Bannon at a Future of Life Institute event focused on AI risks.
Ning Xu, an optical engineer at Tsinghua University in Beijing, won Nikon's 2023 Small World in Motion competition with a super-resolution video capturing the abnormal beating of airway cilia in a child with primary ciliary dyskinesia (PCD). His entry topped 346 submissions from 40 countries in the contest, which is a video-focused offshoot of Nikon's long-running Small World Photomicrography Competition.
NATS released a preliminary report showing that the widespread flight disruption on 8 September stemmed from a software defect in a small part of its National Airspace System. The bug corrupted flight data output when a manual aircraft code request was interrupted by a higher-priority process, all within a millisecond, forcing controllers to restrict traffic nationwide as a safety precaution.
Remedy's Control Resonant, the sequel following Dylan Faden's search for his missing sister Jesse amid a Hiss invasion of Manhattan, has been benchmarked across 28 graphics cards. The game supports full path-traced lighting via Nvidia's RTX Mega Geometry technology alongside the complete DLSS 4.5 suite, including Super Resolution, Ray Reconstruction, and Multi Frame Generation.
Warren Buffett, 96, has resigned as chairman of Berkshire Hathaway effective immediately, ending his decades-long leadership of the company's board. The move comes less than eight months after Greg Abel assumed the CEO role, and Buffett will continue serving as a board member.
A philosophical essay contends that if materialism—the view that consciousness arises purely from physical processes—is correct, then large, complex systems of interacting people, like the United States as a collective entity, could plausibly qualify as conscious. The piece was published without full article content available, but the headline argument draws on longstanding debates in philosophy of mind about what physical conditions are sufficient for consciousness to emerge.
American AI developers have alerted US authorities that foreign actors, likely from China and Russia, are using distillation techniques to replicate the capabilities of Western frontier models at much lower cost. These attacks reportedly involve buying logs of conversations from legitimate accounts to extract training data, making the practice difficult to fully stop despite lab collaboration efforts started earlier in 2026. China has denied the accusations and warned it will impose 'countermeasures' if the US uses this issue to justify restricting Chinese AI development.