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Plasma technology could help plant-based packaging replace plastic
Science News

Plasma technology could help plant-based packaging replace plastic

A new study has found a sustainable and scalable way to improve the durability of plant-based packaging; it's a discovery that researchers say could help curb the environmental footprint of plastic. Researchers used advanced plasma technology to apply layered, protective coatings to the surface of cellulosic nanofibril (CNF) films, with the goal of reducing water absorption and improving moisture resistance.

📅 2026-09-21 20:40:07    •    Phys.org
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Early Mars rocks reveal at least three separate water episodes
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Early Mars rocks reveal at least three separate water episodes

When NASA's Perseverance rover reached the inner edge of Mars' Jezero Crater in September 2023, mission scientists were surprised by what they found. The geologic area, called the "Margin Unit," stretches along the shoreline of an ancient Martian lake, so they expected sedimentary rocks, which would have formed as layers of sand piled on top of each other over millennia. Composed of clay and silt, sedimentary rocks on Earth are good at preserving past microbial life. The scientists were especially intrigued by strong signals of carbonate minerals detected by Mars orbiters. On Earth, carbonates frequently form in shallow ocean and lake environments capable of supporting life.

📅 2026-09-21 20:30:01    •    Phys.org
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Engineered nanoparticles sensitize gliomas to radiotherapy
Science News

Engineered nanoparticles sensitize gliomas to radiotherapy

Gliomas are a major cause of cancer-related deaths in younger adults. About 7,000 patients harbor a common genetic mutation that affects the enzyme isocitrate dehydrogenase 1. This mutated enzyme, called mIDH1, can produce a molecule that can reprogram both the tumor cells and the environment in which they grow. The molecule, known as 2-hydroxyglutarate, can also circulate in the blood and reprogram immune cells in the bone marrow.

📅 2026-09-21 20:20:01    •    Phys.org
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Spaceflight may harm the reproductive system of astronauts' kids and grandkids, early mouse study suggests
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Spaceflight may harm the reproductive system of astronauts' kids and grandkids, early mouse study suggests

Lab mice who spend time in space seem to bear offspring with reduced reproductive capacity, a new study suggests. But what that might mean for human astronauts and their families is still unclear.The research, published June 30 in the journal PNAS, looked at female mice that had spent extended periods on the International Space Station (ISS). These mice had similar levels of fertility as Earth-bound mice. However, their children and grandchildren produced smaller-than-average litters, had fewer litters overall and had lower levels of key reproductive hormones, among other measurable differences. "The offspring of those that came back from space were altered in their behavior, their muscle, t...

📅 2026-09-21 20:10:00    •    Live Science
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Definition of dyslexia updated for first time in 20 years
Science News

Definition of dyslexia updated for first time in 20 years

A Texas A&M University researcher helped shape the first major update in more than two decades to the International Dyslexia Association's definition of dyslexia. The revised definition reflects advances in dyslexia research and could influence how schools, policymakers and others identify and support students with learning disabilities.

📅 2026-09-21 20:00:04    •    Phys.org
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Earth's center of mass drifts less than we thought
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Earth's center of mass drifts less than we thought

Where is Earth's center of mass? The answer seems trivially obvious. It's right in the middle of the planet. Ah, but that kind of thinking won't get you a paper in the Geophysical Journal International. It's also not a trivial question. Knowing Earth's center of mass to within millimeters reveals some interesting facts about our planet.

📅 2026-09-21 19:40:06    •    Phys.org
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New nanoparticle drug-delivery method may improve treatment for endometriosis
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New nanoparticle drug-delivery method may improve treatment for endometriosis

Researchers have engineered a drug treatment that shows rapid effectiveness against endometriosis in early testing, laying the foundation for a potential therapy for an incurable, chronic disease that affects 1 in 10 women. The targeted nanotherapy, developed by a team of scientists at Washington State University, reduced endometriosis symptoms and disease progression after a single dose in a mouse model.

📅 2026-09-21 19:40:02    •    Phys.org
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Truckee River microplastics rise nearly tenfold during high spring flows
Science News

Truckee River microplastics rise nearly tenfold during high spring flows

The ubiquitous plastics of modern life are degrading into tiny fragments and littering Earth's landscapes and waterways. Scientists are starting to examine and measure this phenomenon to better understand how microplastics move through the environment and ultimately affect human and environmental health. A new study focuses on the Truckee River, which stems from the clear blue waters of Lake Tahoe and traverses Reno and Sparks, Nevada, before reaching Pyramid Lake. The research sought to illuminate the concentrations and types of plastics accumulating throughout the river—which supplies drinking water to nearly half a million people.

📅 2026-09-21 19:30:02    •    Phys.org
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How migrating cells build their leading edge: Master regulator may resolve long-standing debate
Science News

How migrating cells build their leading edge: Master regulator may resolve long-standing debate

The ability of cells to move and change position is essential for various processes in our bodies. Immune cells move to sites of action, epithelial cells migrate during wound closure, and neurons extend their axons for signal transmission over long distances. In metastasis, cancer cells employ their motile machinery to spread throughout the body.

📅 2026-09-21 19:20:08    •    Phys.org
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Developing lower-performing employees may annoy the go-getters
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Developing lower-performing employees may annoy the go-getters

When Martin Wiernsperger was a graduate student, he and fellow student Mackenzie Feinberg realized they both had family members in the health care field—and both had heard relatives complain about lower-performing employees getting more opportunities for training and professional development than their higher-performing peers.

📅 2026-09-21 19:20:04    •    Phys.org
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Solar Orbiter catches the sun's missing high-speed vibrations
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Solar Orbiter catches the sun's missing high-speed vibrations

The sun's magnetic fields are a twisty, curvy, ever-changing mess. In particular, our star's polar regions host areas called polar coronal holes, which contain invisible magnetic highways that stretch into interplanetary space. But there's a lot we don't know about how those highways actually work, particularly how they give the particles that form the fast solar wind an extra "kick" that sends them zooming at hundreds of kilometers per second.

📅 2026-09-21 19:00:04    •    Phys.org
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Scientists made a paper battery you can swallow to power internal medical devices
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Scientists made a paper battery you can swallow to power internal medical devices

Scientists built a swallowable paper battery that can power medical devices inside the body and then gradually break down after its job is done.So far, the battery has been tested only in pigs, in which it powered devices for up to three days. If proven safe and effective in people, the battery could someday power temporary devices inside the gut while avoiding surgery to retrieve a conventional battery from the body when the device is no longer needed."I'm very excited about this work," said Reza Ghodssi, a professor of electrical and computer engineering at the University of Maryland who was not involved in the study. "The battery is one component that takes up most of the space in an inge...

📅 2026-09-21 18:30:00    •    Live Science
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Dumbest question is the one you never ask, says Amazon CEO
Research Institutions

Dumbest question is the one you never ask, says Amazon CEO

Andy Jassy. Veasey Conway/Harvard Staff Photographer Work & Economy Dumbest question is the one you never ask, says Amazon CEO AI competition – among companies and in the labor market – also on Jassy’s mind in HBS talk Christina Pazzanese Harvard Staff Writer September 21, 2026 4 min read Though it’s best known as an online retail and streaming giant, Amazon has also played a central role in the AI revolution. In August, the company’s valuation hit $3 trillion. Much of that was driven by Amazon Web Services (AWS), the cloud computing operation that serves as a primary platform for both large-scale frontier model AI builders like Anthropic and OpenAI and for smaller firms developing simpler, ...

📅 2026-09-21 18:23:56    •    Harvard Gazette
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Democracy? Some founders were skeptical.
Research Institutions

Democracy? Some founders were skeptical.

Illustration by Liz Zonarich/Harvard Staff Nation & World Democracy? Some founders were skeptical. Historians detail how, why Constitution became (and remains) work in progress Liz Mineo Harvard Staff Writer September 21, 2026 5 min read Part of a series of occasional features marking the nation’s semiquincentennial. Creating a democracy was not really at the forefront of the founders’ minds when the American colonies first declared independence from Britain in 1776. The independence movement began as a struggle between the colonies and the crown to gain more rights within the empire, not to break away from it, said Alex Keyssar, Matthew W. Stirling Jr. Professor of History and Social Policy...

📅 2026-09-21 18:23:05    •    Harvard Gazette
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A newly discovered mechanism helps cells prevent errors during DNA replication
Science News

A newly discovered mechanism helps cells prevent errors during DNA replication

At the scale of individual cells, the human body is constantly in motion. Every second, millions of cells divide, particularly in tissues such as the bone marrow, intestine and skin; neurons and heart muscle cells divide far less frequently. All of this depends on the molecular machinery responsible for copying the billions of chemical units that make up DNA inside the nucleus.

📅 2026-09-21 18:20:05    •    Phys.org
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STEM activities with family and educators expose students to diverse career paths
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STEM activities with family and educators expose students to diverse career paths

Activities children take part in with family and friends can help shape the fields of study and careers they pursue as adults. A new study published in the International Journal of STEM Education by FIU education researchers Chris Irwin and Zahra Hazari found that STEM activities and conversations with family, friends and teachers are among the strongest factors influencing students' motivations for pursuing STEM (science, technology, engineering and math) careers.

📅 2026-09-21 18:20:01    •    Phys.org
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Antarctica's lost mountains may have helped early life flourish
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Antarctica's lost mountains may have helped early life flourish

Beneath the vast frozen wastes of Antarctica lie the remains of ancient mountains that have long since eroded. Even though they're no longer standing, they can still reveal a few lost secrets. New research published in Earth and Planetary Science Letters suggests that these vanished peaks may have played a fundamental role in the evolution of complex life on this planet.

📅 2026-09-21 18:10:01    •    Phys.org
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