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Intensive nickel mining has transformed microbial biodiversity of Thio Lagoon in New Caledonia

A study carried out by scientists from Ifremer, IRD, the universities of Western Brittany (UBO) and Bordeaux, CNRS, and the University of Tartu (Estonia) reveals the impact of nickel mining on the coastal ecosystems of New Caledonia. Published in the journal Communications Earth & Environment, this research shows that starting in the 1950s, the mechanization of mining operations led to a sharp increase in sediment inputs into the Thio Lagoon and a disruption of microbial communities that persists to this day.

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AI system evaluates chemical spectra in minutes

A research team has developed an artificial intelligence (AI) system that proposes suitable molecular structures from the raw data of spectroscopic measurements and assesses their plausibility. The system is openly accessible and has been published in the journal Nature Communications by researchers from Friedrich Schiller University Jena, Helmholtz-Zentrum Berlin for Materials and Energy, the Helmholtz Institute for Polymers in Energy Applications Jena and the Swiss software company Zakodium Sárl.

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A flexible graphene-based neural interface can 'speak and listen' to the brain

Neural interfaces are devices that can detect or modulate neuronal activity when placed in contact with the brain. They are already used to treat various conditions related to the nervous system. However, current technologies still have limitations that can reduce their effectiveness. One example is their unidirectional function. While most existing interfaces can stimulate the brain, they cannot accurately detect or decode brain activity simultaneously. Even when they can do so, they often face limitations in the detection of certain signals, particularly those at very low frequencies.

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Why one famous predator shrank two ways: Fossils reveal distinct growth strategies in early Permian Dimetrodon

The sail-backed predator Dimetrodon is one of the most iconic animals of the early Permian—long before dinosaurs dominated Earth. Most known species of this early relative of mammals reached large body sizes, sometimes up to 3 meters (10 feet) in length and 250 kilograms (550 pounds). Yet some species remained surprisingly small. A new study by an international research team led by Dr. Aurore Canoville of the Friedenstein Stiftung Gotha and the Museum für Naturkunde Berlin now shows that these small body sizes were achieved through very different growth strategies.

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Chemists uncover new metal carbene radical cross-coupling by merging two catalytic cycles

In an effort to open the door to new and useful products, chemistry researchers are on the continual lookout for processes that unlock important molecules and the bonds that can put them together. Such is the case for UC Santa Barbara chemistry professor Yang Yang, who builds his research around discovering novel biocatalytic methods, processes that facilitate chemical reactions with biocatalysts from evolved natural proteins.

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Slaughter in the water: Can the Ramsar Convention protect African waterbirds?

The Ramsar Convention is the world's longest-standing international treaty for wetland and waterbird protection. Signed in Ramsar, Iran, in 1971, the Convention on Wetlands of International Importance Especially as Waterfowl Habitat has to date been signed by 172 countries, which have agreed to engage in "working together for wetland conservation and wise use" in more than 2,500 protected areas covering over 2.5 million square kilometers (965,000 square miles) around the world. However, the Ramsar Convention's measures are not legally binding, leaving open the possibility that many Ramsar sites may be akin to "paper parks"—protected in theory, but not in reality.

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Darkness unlocks more ordered nanotubes in light-responsive molecular assemblies, study suggests

Life on Earth has evolved under an uninterrupted rhythm of day and night. While light provides the energy that powers countless molecular processes, periods of darkness often allow biological systems to reorganize, recover and transform that energy into functional outcomes. Inspired by this natural balance, an international team led by Javier Montenegro at the Center for Research in Biological Chemistry and Molecular Materials (CiQUS) of the Universidade de Santiago de Compostela has demonstrated that the same principle can govern the behavior of simple synthetic molecular systems.

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High degree of quantum entanglement detected for first time in centimeter-sized crystal of strange metal

Many quantum effects can be observed only when a small number of particles is studied—individual atoms, molecules or photons, for example, carefully shielded from the rest of the world. But what about macroscopic objects, consisting of an unimaginably large number of particles? Can they, too, display effects that provide a direct glimpse into the quantum world?

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A heat sensor for living cells could offer new views of cell metabolism, rapid antibiotic testing

When living cells grow, divide or respond to drugs, they give off tiny amounts of heat that offer information about what the cells are doing. But because these heat signals are so vanishingly small, they have traditionally been impossible to measure directly. Researchers in the Harvard John A. Paulson School of Engineering and Applied Sciences (SEAS) have developed a calorimeter—a device that measures the heat transfer between a living system and its environment—that can detect metabolic heat signals on the order of 100 picowatts, or trillionths of a watt, in living cells.

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