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How unflagged, factual content drives vaccine hesitancy
Many hands holding smartphones and other sources of information about COVID-19.

Image: iStock/zubada

How unflagged, factual content drives vaccine hesitancy

A new paper from computational social scientist Duncan Watts examines how factual, vaccine-skeptical content on Facebook has a greater overall effect than “fake news,” discouraging millions from the COVID-19 shot.

From Penn Engineering Today

Researchers upend theory about the formation of the Milky Way Galaxy
Visualization of a ‘wrinkly’ halo of stars around the Milky Way.

This image visualizes the Milky Way and its surrounding “halo” of stars. Most stars in the Milky Way lie in the disc (like the Sun, for example), but stars from past collisions end up in the halo, a large “cloud” of stars that extends outwards in all directions. These halo stars have been enhanced in this image, but in reality would be very dim compared to the disc. The halo appears messy and “wrinkly” here, a sign that a merger has occurred relatively recently.

(Image: Halo stars: ESA/Gaia/DPAC, T Donlon et al. 2024; Background Milky Way and Magellanic Clouds: Stefan Payne-Wardenaar)

Researchers upend theory about the formation of the Milky Way Galaxy

New findings by Robyn Sanderson and collaborators suggest galaxy’s last major collision was billions of years later than previously thought.
Fruitful insights on the brain
Photograph of researcher, China Byrns, in front of monitor showing microscopy images of fly brain

China Byrns used high-magnification confocal microscopy to visualize senescent glia (red) in Drosophila brains as part of a multidisciplinary approach to define the origin and effects of senescent cells in brain aging.

(Image: Courtesy of Riya Anand)

Fruitful insights on the brain

Research led by China Byrns of the lab of Nancy M. Bonini in the School of Arts & Sciences have uncovered new details about the role of zombie-like cells in brain aging, using the fruit fly as a model.
New insights on cellular clones and inflammation in bones
Hajishengallis, an expert in the immune mechanisms behind the gum disease periodontitis

Hajishengallis, an expert in the immune mechanisms behind the gum disease periodontitis, worked with an international team to show that the innate immune system--typically thought to lack immune memory--can in fact be trained to "remember" past threats.

New insights on cellular clones and inflammation in bones

Research led by George Hajishengallis of Penn Dental sheds light on an aging-related condition that drives inflammation in older populations.
Public defender shortages
Image is of the Delaware County courthouse, a Classical Revival/Neo-Classical style building made of white marble,with a six column portico and clock in the pediment, located in Media, Pennsylvania.

The Delaware County courthouse is seen, Thursday Oct. 15, 2020, in Media, Pennsylvania.

(Image: AP Photo/Jacqueline Larma)

Public defender shortages

A new report by Paul Heaton, director of the Quattrone Center for the Fair Administration of Justice, shows that nearly every county in Pennsylvania has a shortage of public defenders.

Kristen de Groot