News from

Natural Sciences

Reset All Filters
128 Results
How one molecule keeps plants youthful
flowering acacia plant.

Image: Courtesy of Omnia.

How one molecule keeps plants youthful

In a career-defining paper, Scott Poethig, a biologist at the School of Arts & Sciences, has discovered that a single molecular switch can freeze plants in their juvenile state.

Marilyn Perkins

2 min. read

One School, many schools of thought
Mark Trodden.

School of Arts & Sciences dean Mark Trodden joins faculty in discussion for Omnia’s latest podcast series.

nocred

One School, many schools of thought

A special edition of the Penn Arts & Sciences “Ampersand” podcast features Dean Mark Trodden in conversation with SAS faculty from different disciplines.

Alex Schein

2 min. read

Evolution at a molecular level

Biologist Mia Levine and colleagues have demonstrated how a pair of essential protein partners undergo rapid evolutionary change to counter fast-evolving parasitic DNA while maintaining core cellular functions. The work presents novel insight into how evolution works at the molecular level.

(Image: Getty images/Joao Paulo Burini)

Evolution at a molecular level

Research led by Mia Levine shows how a vital DNA protection protein complex adapts to new threats without compromising essential functions.

3 min. read

An ‘illuminating’ design sheds light on cholesterol
A researcher scribbles an organic molecule

nocred

An ‘illuminating’ design sheds light on cholesterol

High levels of cholesterol are linked to heart disease, stroke, and many other health problems. However, this complex and vital fatty, water insoluble molecule—a lipid—is found in every cell of the body and is not all bad news. It also regulates crucial processes that science has yet to map.

3 min. read

The human side of clean energy

The human side of clean energy

In their new book “Power Lines: The Human Costs of American Energy in Transition,” Sanya Carley and David Konisky ask what happens to the people left behind in America’s energy transition.

From Kleinman Center for Energy Policy

2 min. read

Understanding the climate record through objects
Melissa Charenko stands in front of art in her office.

In her office, Melissa Charenko has paintings by artist Jill Pelto that depict the kind of climate proxies Charenko writes about in her new book, such as sediment cores containing pollen grains.

nocred

Understanding the climate record through objects

Melissa Charenko’s new book shares the history of how 20th-century scientists used climate “proxies”—such as tree rings and fossil pollen—to understand past climates, which has implications for future climate action.

3 min. read

Letting the sunshine in and monitoring stormwater runoff
Tree saplings next to the solar panels.

Trees planted next to the solar panels are enhancing stormwater runoff infiltration.

(Image: The Water Center at Penn)

Letting the sunshine in and monitoring stormwater runoff

As the buzz around renewable energy grows louder, a research endeavor led by the Water Center at Penn exemplifies of how addressing energy demands goes hand-in-hand with tackling water challenges.

From the Environmental Innovations Initiative

2 min. read

A serendipitous find leads to lifesaving discoveries
Fluorescent imaging of glioblastoma under a microscope.

Image: Kyosuke Shishikura

A serendipitous find leads to lifesaving discoveries

A Penn-led team has revealed a how hydralazine, one of the world’s oldest blood pressure drugs and a mainstay treatment for preeclampsia, works at the molecular level. In doing so, they made a surprising discovery—it can also halt the growth of aggressive brain tumors.

3 min. read

Nanoparticle blueprints reveal path to smarter medicines
Hannah Yamagata, Research Assistant Professor Kushol Gupta and postdoctoral fellow Marshall Padilla, holding 3D-printed models of nanoparticles in a lab.

(From left) Doctoral student Hannah Yamagata, research assistant professor Kushol Gupta, and postdoctoral fellow Marshall Padilla holding 3D-printed models of nanoparticles.

(Image: Bella Ciervo)

Nanoparticle blueprints reveal path to smarter medicines

New research involving Penn Engineering shows detailed variation in lipid nanoparticle size, shape, and internal structure, and finds that such factors correlate with how well they deliver therapeutic cargo to a particular destination.

Ian Scheffler

2 min. read

How a coral stiffens its skeleton on demand
Chenhao Hu holds up a 3D-printed model of a sclerite.

Penn Engineering doctoral student Chenhao Hu holding a 3D-printed model of a sclerite, the tiny mineral particles that make up the coral’s skeleton and whose unique shape allows the organism to tune its own stiffness.

(Image: Bella Ciervo)

How a coral stiffens its skeleton on demand

Researchers at Penn Engineering have discovered how a coral’s skeleton compacts itself to ward off danger, a novel discovery of “granular jamming” in a living organism.

Ian Scheffler

2 min. read