Phys.org news
Phys.org / Built to last or break down: Ring size tunes biodegradable plastic lifetimes
Biodegradable plastics should be tough enough for use yet able to break down at an appropriate rate afterward. Researchers at the University of Osaka show that changing the size of rings threaded onto a biodegradable polymer ...
Phys.org / 'Green thumb' molecule helps leaf stalks grow in crowded conditions
Potassium (K) is one of the three essential nutrients for plants. It plays a critical role in a wide range of processes, including cell growth, photosynthesis and regulation of water balance. Plants take up K from the soil ...
Phys.org / Predictive tools can confuse rare mutations with dangerous ones
When a patient's DNA is read, it is compared with a reference version of the human genome. This allows geneticists and rare disease experts to look at a list of places where the patient's DNA differs. Most variations will ...
Phys.org / Permafrost melt could cost $261 billion in infrastructure damages, study suggests
A new study provides insight into the economic impact of melting permafrost on Arctic communities. Permafrost is ground that permanently remains below freezing for at least two consecutive years. Permafrost covers about 24% ...
Phys.org / BESIII sets world's most stringent direct limit on Lambda hyperon electric dipole moment
The BESIII Collaboration, led by the Institute of High Energy Physics of the Chinese Academy of Sciences, has achieved the world's most precise measurement of the electric dipole moment (EDM) of the Lambda (Λ) hyperon using ...
Phys.org / Heat has a memory—and a new theoretical framework can track it
Heat, it turns out, has a memory. A cooling cup of coffee may not seem particularly thoughtful. At the scale of a kitchen, heat appears to follow a straightforward rule: it moves from warmer places to cooler ones. Leave the ...
Phys.org / Wrinkled or smooth? Cell growth mechanics determine shape of plant organs
When inner and outer cell layers of sepals—the leaf-like plant organs that cover and protect the flower bud before it opens—all grow upward, the organs stay smooth and uniformly stiff, which is optimal for the plant, according ...
Phys.org / Ancient DNA suggests western farming reached Gansu without mass migration
A multidisciplinary study has answered key questions about how agricultural practices diffused into ancient Gansu from Eurasia, as well as described population movements and burial practices in the Gansu region thousands ...
Phys.org / Chimpanzees have accents too, study finds
A study has found that young chimpanzees develop distinct population-specific vocal patterns as they mature (ontogeny), challenging the long-held assumption that their calls are inflexible and determined solely by genetics. ...
Phys.org / First switchable graphene nanoribbon that twists on demand
Researchers at Nagoya University have built a graphene nanoribbon that can switch the direction of its twist using a natural solvent. Graphene nanoribbons are thin, ribbon-shaped structures made of fused carbon rings. Twisted ...
Phys.org / Rising species numbers on Europe's mountaintops may mask increasing losses of high-elevation plant specialists
Decades of warming have relaxed cold-temperature constraints on mountain plant distribution and increased species numbers on mountaintops. An international research team led by scientists from the University of Vienna, together ...
Phys.org / Pigment found in beets linked to plants' adaptation to harsh environments
The pigments that give beets their red color may have helped a major group of flowering plants repeatedly adapt to dry environments, setting the stage for the evolution of traits that allowed plants to adapt to some of the ...
