Ruehle and collaborators took up the old problem of approximating Calabi-Yau metrics. Anderson and others also revitalized their earlier attempts to overcome step 2. The physicists found that neural networks provided the speed and flexibility that earlier techniques had lacked. The algorithms were able to guess a metric, check the curvature at many thousands of… Continue reading AI Starts to Sift Through String Theory’s Near-Endless Possibilities
‘Grading for Equity’: Promoting Students by Banning Grades of Zero and Leaving No Class Cut-Ups Behind
Joe Feldman has faced many tough crowds in the course of successfully selling his “Grading for Equity” program to school districts across the nation. During the consultant’s presentations, teachers concerned that his approach lowers standards have rolled their eyes, questioned his understanding of students, and worse. Joe Feldman, equity-grading booster: Teachers and parents can be… Continue reading ‘Grading for Equity’: Promoting Students by Banning Grades of Zero and Leaving No Class Cut-Ups Behind
Ecologists Struggle to Get a Grip on ‘Keystone Species’
In that sense, in microbial communities, the keystone species concept is context-dependent. A keystone in one microbiome might not be a keystone in another. “I feel that this aspect has not been highly appreciated by ecologists,” Liu said. Ecologists are now grappling with this contextual nature of keystone species beyond microbes and pondering whether, and how,… Continue reading Ecologists Struggle to Get a Grip on ‘Keystone Species’
How Catholics Can Save American Education
I was a teacher and then worked in test prep before starting the Classic Learning Test. Before and especially since then, I’ve reviewed a lot of high school curricula, particularly from Catholic and/or classical high schools, which tend to get some flak for their focus on things like Latin, rhetoric, and philosophy. When people argue… Continue reading How Catholics Can Save American Education
Does Pi Contain All of Shakespeare?
All circles, from onion rings to Saturn’s rings, share a magnificent property: their circumferences stretch about three times longer than their diameters. To be more precise (though still not exact), the circumferences are 3.14159, or pi, times longer. Circles are such fundamental shapes that pi, the number that governs them, stamps its signature across the… Continue reading Does Pi Contain All of Shakespeare?
My Fantastic Voyage at Quanta Magazine
In 2016, I joined Natalie, Siobhan Roberts and Emily Singer in profiling four master science and math teachers as part of an education series that included video vignettes produced by my former New York Times colleague Lisa Iaboni, an interactive survey of readers’ experiences with math and science built by Emily Fuhrman, my interview with… Continue reading My Fantastic Voyage at Quanta Magazine
How Do Machines ‘Grok’ Data?
As a network trains, it tends to learn more complex functions, and the discrepancy between the expected output and the actual one starts falling for training data. Even better, this discrepancy, known as loss, also starts going down for test data, which is new data not used in training. But at some point, the model… Continue reading How Do Machines ‘Grok’ Data?
Geometers Engineer New Tools to Wrangle Spacecraft Orbits
You can create a graph with the angle as the x-axis and the speed as the y-axis. But since traveling 360 degrees brings you back to the start, you can sew together the vertical lines where x is zero degrees and where x is 360 degrees. This makes a cylinder. The cylinder doesn’t directly reflect… Continue reading Geometers Engineer New Tools to Wrangle Spacecraft Orbits
The Baghdad Battery (Advanced Technology? Out of Place Artifact? OOPART?)
Podcast: Download MYS308: Some are convinced that an ancient clay pot found in Iraq is an electric battery made 2,000 years ago. Jimmy Akin and Dom Bettinelli examine the claim and whether it might be advanced, ancient technology or even evidence of extraterrestrial contact. Get all new episodes automatically and for free: Follow by Email… Continue reading The Baghdad Battery (Advanced Technology? Out of Place Artifact? OOPART?)
Pleasure or Pain? He Maps the Neural Circuits That Decide.
Does finding this skin-to-brain pathway have any medical implications? Yes, the skin is a good therapeutic target. It’s accessible and presents a direct highway to the part of the brain that makes us feel good. What if we could turn on these neurons with a skin cream to improve mental health — say, to offset… Continue reading Pleasure or Pain? He Maps the Neural Circuits That Decide.