The video explains the concept of nuclear bomb-powered X-ray lasers, a Cold War-era idea where a nuclear explosion would be used to power a lasing medium to produce intense X-ray beams as a directed-energy weapon. It discusses the scientific principles behind how such a device could theoretically work and the historical context of research into this technology for missile defense.
A new paper by Thomas Bloom, Will Sawin, Carl Schildkraut and Dmitrii Zhelezov disproves a well-known conjecture in additive combinatorics. The result shows there exist arbitrarily large finite sets A of real numbers where max(|A+A|,|AA|) ≤ |A|^{2-c}. The solution was achieved by humans using methods related to an earlier AI solution to the unit distance conjecture.
John Burn-Murdoch guest-hosted BBC's Radical podcast, speaking with geneticist Sir John Bell about recent and upcoming medical breakthroughs.