Category: Quantum Stuff

In 1850, Thomas Penyngton Kirkman, a mathematician when he wasn’t fulfilling his main responsibility as a vicar in the Church of England, described his “schoolgirl problem”: “Fifteen young ladies in a school walk out three abreast for seven days in succession: it is required to arrange them daily, so that no two shall walk twice… Continue reading Hypergraphs Reveal Solution to 50-Year-Old Problem

President Biden used his first State of the Union address to reset his administration after a year of inflation and crises at home and abroad that has left him with nearly record-low approval ratings. But Biden did little to restart his stalled climate agenda. He spoke only briefly about climate change—talking about it roughly as… Continue reading What Biden Said—and Didn’t Say—on Climate during the State of the Union

Explore A gulp of air, a kick of flippers, and the elephant seal dives. Sunlight slants through the Southern Ocean’s melting roof of sea-ice, its solid dome shattered by the arrival of Antarctic summer. The seal—Mirounga, we’ll call her—descends many times each day to snatch fish and squid in her toothy jaws; she spends 90… Continue reading What Oceanographers Can Learn From Their Animal Colleagues

Inside, the office is spare, pragmatic: just a computer, printer, chalkboard, papers and books, with few personal effects. The place where the magic happens seems not so much a physical location in space-time as a higher-dimensional world of abstractions in Viazovska’s mind. Across the small table in her office, the world’s preeminent sphere-packing number theorist… Continue reading Ukrainian Mathematician Maryna Viazovska Wins Fields Medal

One question for Lee McIntyre, research fellow at the Center for Philosophy and History of Science at Boston University. McIntyre is the author of The Scientific Attitude: Defending Science from Denial, Fraud, and Pseudoscience, and How to Talk to a Science Denier. How do we get people who believe in pseudoscience to trust science? We… Continue reading How Do We Get People Who Believe in Pseudoscience to Trust Science?

Ever since it was approved in 2000 as an abortion pill, mifepristone has been regulated as if it were a dangerous substance. The U.S. Food and Drug Administration required doctors to be specially certified to prescribe it. Patients had to sign an agreement confirming that they had been counseled on its risks. Most onerously, the… Continue reading Abortion Pills Are Very Safe and Effective, yet Government Rules Still Hinder Access

As U.S. forces withdrew from Afghanistan, the Taliban immediately rushed in, and it recently took over the country’s major cities in just a few days. The end of the two-decade American occupation has not only produced a fraught political situation; it has also created an environmental one. Some of the military bases the U.S. handed… Continue reading U.S. Forces Are Leaving a Toxic Environmental Legacy in Afghanistan

Huh discovered that this kind of mathematics could give him what poetry could not: the ability to search for beauty outside himself, to try to grasp something external, objective and true, in a way that opened him up more than writing ever had. “You don’t think about your small self,” he said. “There’s no place… Continue reading June Huh, High School Dropout, Wins the Fields Medal

The following essay is reprinted with permission from The Conversation, an online publication covering the latest research. Shortly after Russia launched its attack on Ukraine, both governments said that the Russian military had taken over the decommissioned Chernobyl nuclear power plant, the site of the world’s worst nuclear disaster. In a tweet, the Ukrainian Ministry of… Continue reading Russian Capture of Ukraine’s Chernobyl Nuclear Plant Threatens Future Research