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A new regime for analyzing properties of topological materials
a hand adjusting a lens on an optics table

A new regime for analyzing properties of topological materials

A pair of studies demonstrates how two related metal alloys, cobalt monosilicide and rhodium monosilicide, can convert light into electric current efficiently thanks to their topology.

Erica K. Brockmeier

Climate change doesn’t spare the smallest
Topographic map of Area de Conservacion Guanacaste in Costa Rica showing different biomes

The ACG is home to a variety of different types of environments and ecosystems, and a rich diversity of species. (Image: Courtesy of Daniel Janzen and Winnie Hallwachs)

Climate change doesn’t spare the smallest

Changing conditions have taken a toll on insects in the tropics, according to research by School of Arts & Sciences biologists Daniel Janzen and Winnie Hallwachs. But education and science offer a path forward, they say.

Katherine Unger Baillie

Seeing clearly through the fog of war
Side-by-side photos of author and book cover of Rational Fog by M. Susan Lindee

Seeing clearly through the fog of war

In a new book, science historian M. Susan Lindee of the School of Arts & Sciences explores the interplay between scientific progress and violence in modern war.

Katherine Unger Baillie

How can the world allocate COVID-19 vaccines fairly?
Hands holding a box of COVID vaccine vials.

How can the world allocate COVID-19 vaccines fairly?

It’s an ethical question many Penn experts are contemplating. One fact is certain, they say: Distribution must not exacerbate disparities and inequities in health care.

Michele W. Berger

New strategies for designing electroluminescent materials
a line of green LED lights

New strategies for designing electroluminescent materials

A collaborative team of materials scientists and theoretical chemists provide hybrid perovskite nanoparticles that are high-efficiency light emitters by using a comprehensive defect-suppression strategy.

Erica K. Brockmeier

Capitol attack: Where does American democracy go from here?
The U.S. Capitol building is seen at dusk

The U.S. Capitol at dusk.

Capitol attack: Where does American democracy go from here?

As the nation processes the unprecedented mob attack on the U.S. Capitol, many are wondering what happens now for America. Legal scholar Claire Finkelstein shares her thoughts on the siege and its effects on democracy.

Kristen de Groot

Lost and found: The art of translation
Abstract painting of books, writing utensils, flowers, and decorative brush strokes.

Lost and found: The art of translation

For faculty in the School of Arts & Sciences, translation is an art that allows us to communicate across cultural difference.

From Omnia

Out with the dust, in with the new
Man shovels snowy street, which is lined by lanterns and banners with Japanese characters

Oosouji, the traditional New Year's cleaning, begins in mid-December in Japan. (Image: jet dela cruz on Unsplash)

Out with the dust, in with the new

In Japan, New Year's preparations start with a big cleaning in December for good luck in January.

Kristina García