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Photonic chip design offers simpler solution for one-way light flow in optical circuits

Photonic chip design offers simpler solution for one-way light flow in optical circuits

To improve photonic and electronic circuitry used in semiconductor chips and fiber optic systems, researchers at the McKelvey School of Engineering at Washington University in St. Louis tinkered with the rules of physics that govern the movement of light over time and space. They have introduced a new way to manipulate light transmission, opening possibilities for advanced optical devices.

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5 w

Shifting pollution abroad may help democratic nations appear more environmentally friendly than non-democratic countries

Shifting pollution abroad may help democratic nations appear more environmentally friendly than non-democratic countries

Democratic countries tend to be rated "greener," or more environmentally friendly, compared to other countries—but this may be because they more often outsource the environmental impacts of their consumption to other nations, according to a study published in PLOS Climate by Thomas Bernauer and Ella Henninger from ETH Zurich, Switzerland and Tobias Böhmelt from the University of Essex.

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5 w

Barbies today are much less likely to be on their tip-toes than in past decades

Barbies today are much less likely to be on their tip-toes than in past decades

According to a new study, the proportion of Barbie-brand dolls with the toy's iconic tip-toe posture has dropped over time. Cylie Williams of Monash University in Frankston, Australia, and colleagues present these findings in the open-access journal PLOS One.

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5 w

Finger bone analysis uncovers how ancient human relatives in South Africa used their hands

Finger bone analysis uncovers how ancient human relatives in South Africa used their hands

Scientists have found new evidence for how our fossil human relatives in South Africa may have used their hands.

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5 w

Durable catalyst boosts efficiency of high-temperature CO₂ conversion

Durable catalyst boosts efficiency of high-temperature CO₂ conversion

We've all heard that carbon dioxide (CO2) emissions need urgent solutions, but what if we could turn this greenhouse gas into useful chemicals or fuels? Electrochemical CO2 conversion—the process of transforming carbon dioxide into valuable products—is a promising path toward greener energy and reducing emissions. The catch? Existing methods either don't last long or consume too much energy, limiting their real-world use.

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5 w

Ancient climate patterns help refine predictions for South Asian monsoon changes

Ancient climate patterns help refine predictions for South Asian monsoon changes

The South Asian Summer Monsoon (SASM) is the world's most significant monsoon system, providing approximately 80% of the region's annual rainfall—influencing agriculture, water security, and the livelihoods of more than a billion people across the Indian Peninsula, the western Indochina Peninsula, and the southern Qinghai-Tibet Plateau.

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5 w

Penning-trap system enables loss-free transfer of protons between experimental sites

Penning-trap system enables loss-free transfer of protons between experimental sites

Protons are the basic building blocks of matter. Together with neutrons, they form atomic nuclei. These minute, positively charged particles have an antimatter counterpart, antiprotons. While the latter have a negative charge and a reversed magnetic moment, they are otherwise identical to protons—at least according to the Standard Model of particle physics.

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5 w

Marsupial research reveals how mammalian embryos form

Marsupial research reveals how mammalian embryos form

Researchers at the Francis Crick Institute have revealed insight into why embryos erase a key epigenetic mark during early development, suggesting this may have evolved to help form a placenta.

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MXene-antibody sensor enables low-cost, accurate vitamin D detection in remote regions

MXene-antibody sensor enables low-cost, accurate vitamin D detection in remote regions

An electrochemical sensor designed to address a global health issue that particularly impacts people in the Middle East and North Africa (MENA) has been created by a multidisciplinary team at KAUST. The sensor detects low vitamin D levels in blood samples, providing early warning of an essential vitamin deficiency that can have severe health consequences if left untreated.

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A ripple effect: Minor quakes can disrupt natural tectonic patterns deep underground and change stress landscape

A ripple effect: Minor quakes can disrupt natural tectonic patterns deep underground and change stress landscape

When we think of earthquakes, we imagine sudden, violent shaking. But deep beneath Earth's surface, some faults move in near silence. These slow, shuffling slips and their accompanying hum—called tremors—don't shake buildings or make headlines. But scientists believe they can serve as useful analogs of how major earthquakes begin and behave.

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