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Meet a mouse whose brain cortex is made up of human cells

Multiple cameras tracked a mouse as it wandered around a small arena. A computer charted its position and speed, leaving Pong-like traces on a monitor.  The reason to watch this rodent so carefully? Nearly half its brain volume had been replaced with human cells. The effort to mix the brain tissues of distant species is…

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Building the materials foundation for AI

The AI boom is becoming a materials challenge. As AI pushes computing into new territory, the materials behind that infrastructure are becoming just as crucial as the algorithms running on it. Semiconductors and data centers are approaching physical limits around performance, thermal management, electrical efficiency, and reliability, creating new demands for materials that can do…

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Venture Capital & Startup Funding Roundup, September 15, 2026: Alumni Ventures, Kleiner Perkins, Khosla Ventures, Sequoia Capital & More

A quick programming note: We missed yesterday’s funding roundup, so today’s edition is an expanded catch-up. Along with today’s latest funding deals, we’re including several important rounds from yesterday that deserve attention. Venture capital’s message today is unusually coherent: investors […] The post Venture Capital & Startup Funding Roundup, September 15, 2026: Alumni Ventures, Kleiner…

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