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Key cells in the brain, neurons, form networks by exchanging signals, enabling the brain to learn and adapt at incredible speed. Researchers at the Delft University of Technology in The Netherlands (TU Delft) have developed a 3D-printed brain-like environment where neurons grow similarly to a real brain.

Using tiny nanopillars, they mimic the soft neural tissue and the brain extracellular matrix fibers. This model provides new insights into how neurons form networks, as well as a novel tool to understand in future how this process may change in neurological disorders such as Alzheimer’s, Parkinson’s disease, and autism spectrum disorders.

The work is published in the journal Advanced Functional Materials.

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OpenAI’s o3 AI model achieved human-level performance on the ARC-AGI intelligence test, surpassing previous AI benchmarks. While its adaptability is impressive, questions remain about whether this marks real progress toward artificial general intelligence (AGI) or just test-specific optimization.

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The fact that the cold, dry Mars of today had flowing rivers and lakes several billion years ago has puzzled scientists for decades. Now, Harvard researchers think they have a good explanation for a warmer, wetter ancient Mars.

Building on prior theories describing the Mars of yore as a hot again, cold again place, a team led by researchers at the Harvard John A. Paulson School of Engineering and Applied Sciences (SEAS) have determined the chemical mechanisms by which ancient Mars was able to sustain enough warmth in its early days to host water, and possibly life.

“It’s been such a puzzle that there was on Mars, because Mars is further from the sun, and also, the sun was fainter early on,” said Danica Adams, NASA Sagan Postdoctoral Fellow and lead author of the new paper in Nature Geoscience.

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Researchers are exploring multi-level atomic interactions to enhance quantum entanglement. Using metastable states in strontium, they demonstrate how photon.

A photon is a particle of light. It is the basic unit of light and other electromagnetic radiation, and is responsible for the electromagnetic force, one of the four fundamental forces of nature. Photons have no mass, but they do have energy and momentum. They travel at the speed of light in a vacuum, and can have different wavelengths, which correspond to different colors of light. Photons can also have different energies, which correspond to different frequencies of light.

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Muon spin rotation (µSR) spectroscopy is a powerful technique that helps to study the behavior of materials at the atomic level. It involves using muons—subatomic particles similar to protons but with a lighter mass. When introduced into a material, muons interact with local magnetic fields, providing unique insights into the material’s structure and dynamics, especially for highly reactive species such as radicals.

In a new study, a team of researchers led by Associate Professor Shigekazu Ito, from the School of Materials and Chemical Technology, Institute of Science Tokyo, Japan, utilized µSR spectroscopy to investigate the regioselective muoniation of peri-trifluoromethylated 12-phosphatetraphene 1. This compound is a phosphorus congener (a variant of a common chemical structure).

The process of µSR spectroscopy initially involves the formation of a muonium (Mu), which is formed when a positively charged muon (µ+) captures an electron (e–). This process continues as the reaction of a muonium (Mu = [µ+e–]) with the phosphorus-containing compound, resulting in the formation of a muoniated radical at the phosphorus site.

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This rapid rise in temperatures is linked to a growing energy imbalance in the Earth’s system, intensified by human-induced greenhouse gas emissions.

Ocean Warming Accelerates at an Alarming Rate

The rate at which the oceans are warming has more than quadrupled in the past 40 years, according to a new study.

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In recent years, technological advancements have made it possible to create synthetic diamonds that have similar physical and chemical properties to natural diamonds. While synthetic diamonds are not considered “fake” or “imitation,” they are often more affordable than their natural counterparts, making them a popular choice for those who want the beauty of a diamond without the high cost. Synthetic diamonds are also often more environmentally friendly, as they do not require the same level of mining and extraction as natural diamonds.

In its pristine state, diamond is a non-conductive material, devoid of or “holes” that can facilitate electrical conduction (Figure 1). However, by introducing into the diamond crystal lattice, its optical and electrical properties can be significantly altered. As the concentration of boron is increased, the diamond’s color shifts from its characteristic clear hue to a delicate shade of blue, while its electrical conductivity transforms from an insulator to a semiconductor.

Further increases in the boron content result in a lustrous blue shade that resembles the sheen of metallic surfaces and eventually culminates in a deep, ebony coloration. Such heavily boron-doped diamond (BDD) is also as electrically conducting as some metals, and at , exhibits superconductivity, allowing electrical conduction with no resistance.

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