The Frontier
Science & tech breakthroughs in AI models, hardware, and computing that define what's possible
AI Weekly Issue #485: When AI teaches AI, it teaches in secret. The discussion about AI companies facing legal liability for harmful advice highlights a significant shift in regulatory attitudes towards AI accountability, particularly in the context of the ongoing legal debates around AI training practices.
Cerebras, an A.I. Chip Maker, Files to Go Public as Tech Offerings Ramp Up. Cerebras, a key player in AI chip manufacturing, has filed for an IPO following a significant revenue increase and profitability, indicating strong market confidence in AI hardware demand.
Scientists develop dirt-powered fuel cell that could replace batteries. Researchers at Northwestern University developed a dirt-powered fuel cell that harnesses soil microbes, offering a sustainable alternative for powering sensors in agriculture and environmental monitoring.
Capital & Control
Tracking the flow of capital and influence that shapes the tech landscape
QXO to Buy TopBuild in $17 Billion Building Products Deal. QXO Inc. announced its acquisition of TopBuild Corp. for approximately $17 billion, positioning QXO as the second-largest publicly traded distributor in North America, a significant shift in the building products market.
Cracks are starting to form on fusion energy’s funding boom. Emerging tensions in the fusion energy sector are evident as startups face differing opinions on public offerings and business distractions. Despite raising $1.6 billion, the industry is grappling with strategic alignment.
Infrastructure & Power
The physical backbone of AI: compute, data centers, supply chains, and the geopolitics of energy
Cheap Batteries Are Taking Over the World’s Power Grids. The article discusses the significant impact of falling battery costs and rising electricity demand on global energy storage systems, particularly in the context of the ongoing Iran War, which is influencing energy supply dynamics.
Digital Defense
Threats and defenses shaping the global security landscape
Critical flaw in Protobuf library enables JavaScript code execution. A critical remote code execution flaw in protobuf.js has been identified, with proof-of-concept exploit code published. This vulnerability poses significant risks to applications relying on this widely used library, necessitating immediate attention from developers.
The Performance Edge
Peak performance science for sustained execution in high-stakes environments
It doesn’t matter how much you sit — walking more could lower your risk of death and disease. A study tracking over 72,000 individuals found that increasing daily steps can significantly reduce mortality and heart disease risk, suggesting that walking may counteract the health risks associated with sedentary behavior.
Market Pulse
As of Apr 20, 16:00 ET
Movers
Daily market data: indices, sectors, top movers, and volatility