The poster on the classroom wall says 17. But count antiparticles, gluon colors, and chiralities and you're at 118 — and a 2011 theorem about degrees of freedom pushes the 'true' tally to a gloriously non-integer 995.5. Wolchover turns a deceptively simple question into a tour of what 'fundamental' even means.

From just 59 days of data, the Jiangmen Underground Neutrino Observatory measured two oscillation parameters 1.6× more precisely than decades of prior experiments combined — and confirmed that the ~1.5σ disagreement between solar and reactor results hasn't gone away. It's the opening move toward JUNO's real target: pinning down the neutrino mass ordering.

Clark and Favaro lay out the early, measurable signatures of recursive self-improvement inside a frontier lab: code merged per quarter up 8× since 2024, and more than 80% of production code now authored by Claude. They're careful — this isn't AI designing its own successors — but the argument is that the 'doing' is going cheap while strategic judgment stays human, for now, and even that gap is measurably narrowing.

More than 1,600 physicists were asked ten questions about the nature of reality, and the striking result is how little they agree. String theory leads the quantum-gravity field with under 20% support; more than half think black-hole information is preserved; only the most deflationary reading of the Big Bang drew a genuine consensus. A bracing corrective to every 'physicists believe' headline — several supposed field-wide consensuses turn out to be bare pluralities.