Through
11/26
Marketers have said for years that Americans give up their data online, on apps and in stores because of the benefits they receive, such as discounts or special offers. But a new national survey from the University of Pennsylvania’s Annenberg School for Communication rebuts this claim and offers a new explanation: resignation.
In 1913 in Southern California, two 241-mile-long electric lines began carrying power from hydroelectric dams in the Sierra Nevada to customers in Los Angeles—a massive feat of infrastructure. In 1923, power company Southern California Edison upgraded the line to carry 220,000 volts, among the highest voltage lines in the world at the time.
Crystalline materials have atoms that are neatly lined up in a repeating pattern. When they break, that failure tends to start at a defect, or a place where the pattern is disrupted. But how do defect-free materials break?
Cattle in the United States are generally managed to either produce milk or to produce beef. However, in most of the world, cattle are counted on to do both in what are called dual-purpose production systems.
The senior design classes held in each of the School of Engineering and Applied Science’s six departments are an opportunity for University of Pennsylvania students to put their skills to the test, by picking a real-world problem and developing a new piece of technology to solve it.
University of Pennsylvania astronomers are celebrating the dedication of a new planet-hunting telescope known as Minerva-Red. Installed at the Fred Lawrence Whipple Observatory in Arizona, Minerva-Red is part of the Minerva project, an array of low-cost telescopes that are designed to discover planets orbiting stars other than the sun.
By Madeleine Stone @themadstone Kang Ko never planned to become a typical dentist. Long before he came to the University of Pennsylvania School of Dental Medicine to pursue his degree, he fell in love with teaching and research.
If you have a map, you can know where you are without knowing which way you are facing. If you have a compass, you can know which way you're facing without knowing where you are. Animals from ants to mice to humans use both kinds of information to reorient themselves in familiar places, but how they determine this information from environmental cues is not well understood.
Bonding with a friend of a friend is something most humans gravitate toward naturally, or at least Facebook likes to think so every time it suggests friends for you to “friend.”
The compound eyes found in insects and some sea creatures are marvels of evolution. There, thousands of lenses work together to provide sophisticated information without the need for a sophisticated brain. Human artifice can only begin to approximate these naturally self-assembled structures, and, even then, they require painstaking manufacturing techniques.
In a Q&A, PIK Professor Duncan Watts says that U.S. voters ignored Democratic policy in favor of Republican storytelling.
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Michael Mann of the School of Arts & Sciences discusses how much a president can do or undo when it comes to environmental policy.
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Amy Gutmann Hall aims to be Philadelphia’s next big hub for AI and innovation while setting a new standard for architectural sustainability.
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Michael Mann of the School of Arts & Sciences voices his concern about the possibility that the U.S. could become a petrostate.
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Mingmin Zhao of the School of Engineering and Applied Science and colleagues are using radio signals to allow robots to “see” beyond traditional sensor limits.
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Michael Mann of the School of Arts & Sciences says that total carbon emissions including fossil fuel pollution and land use changes such as deforestation are basically flat because land emissions are declining.
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Jennifer Wilcox of the School of Engineering and Applied Science and Kleinman Center for Energy Policy at the Weitzman School of Design says that the carbon-removal potential of forestation can’t always be reliably measured in terms of how much removal and for how long.
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Danny Cullenward of the Kleinman Center for Energy Policy at the Weitzman School of Design says that many things being credited in California’s new climate program don’t help the climate.
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A collaborative study by researchers from the School of Engineering and Applied Science has shed new light on amorphization, the transition from a crystalline to a glassy state at the nanoscale.
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Michael Mann of the School of Arts & Sciences says that a second Trump term and the implementation of Project 2025 represents the end of climate action in this decade.
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