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What The Study Did: Researchers compared health care use among patients with COVID-19 who were enrolled in a home monitoring program with similar patients who were not enrolled.

What The Editorial Says: JAMA Health Forum debuts this week as a peer-reviewed, open-access, online journal focused on health policy, health care systems, and global and public health. The journal has transitioned from an online health policy channel and is the newest member of the family of JAMA Network specialty journals.

Heart disease can take a number of forms, but some types of heart disease, such as asymptomatic low ejection fraction, can be hard to recognize, especially in the early stages when treatment would be most effective. The ECG AI-Guided Screening for Low Ejection Fraction, or EAGLE, trial set out to determine whether an artificial intelligence (AI) screening tool developed to detect low ejection fraction using data from an EKG could improve the diagnosis of this condition in routine practice.

Hydrogen-based fuels should primarily be used in sectors such as aviation or industrial processes that cannot be electrified, finds a team of researchers. Producing these fuels is too inefficient, costly and their availability too uncertain, to broadly replace fossil fuels for instance in cars or heating houses. For most sectors, directly using electricity for instance in battery electric cars or heat pumps makes more economic sense.

An international team of researchers led by physicists from the University of Oldenburg (Germany) has succeeded in generating an unusual quantum state in charge carrier complexes that are closely linked to light particles and located in ultrathin semiconductor sheets. The team reports in the journal Nature Materials that this process produces light similar to that of a laser. The phenomenon could be used to create the smallest possible solid-state lasers.

In spintronics, the magnetic moment of electrons is used to transfer and manipulate information. An ultra-compact 2D spin-logic circuitry could be built from 2D materials that can transport the spin information over long distances and provide strong spin-polarization of charge current. Experiments by physicists suggest that magnetic graphene can be the ultimate choice for these 2D spin-logic devices as it efficiently converts charge to spin current and can transfer this strong spin-polarization over long distances.

New research by Joseph Wu (joewu@stanford.edu), Edgar Engelman (edgareng@stanford.edu), and colleagues at Stanford University, US has advanced an old concept to develop a new strategy to train the immune system of mice to recognize cancer cells.

A Sino-Swiss research team has revealed the dramatic increase in flood risk that could occur across Earth's icy Third Pole in response to ongoing climate change. Focusing on the threat from new lakes forming in front of rapidly retreating glaciers, a team (UNIGE) demonstrated that the related flood risk to communities and their infrastructure could almost triple. Important new hotspots of risk will emerge, including within politically sensitive transboundary regions of the Himalaya and Pamir.

Mini-organs or organoids play a big role in the future of medicine. Their countless applications can help develop and implement tailored therapies for each patient. The revolutionary development of organoids started in Utrecht with a group of curious scientists. But when organoid research starting booming, confusion arose. What exactly is an organoid? A group of experts from around the world now publishes the first consensus on what is - and what is not - an organoid.

Scientists in China and Germany have designed an artificial color-changing material that mimics chameleon skin, with luminogens (molecules that make crystals glow) organized into different core and shell hydrogel layers instead of one uniform matrix. The findings, published May 6, 2021 in the journal Cell Reports Physical Science, demonstrate that a two-luminogen hydrogel chemosensor developed with this design can detect seafood freshness by changing color in response to amine vapors released by microbes as fish spoils.

Sea turtles are known for relying on magnetic signatures to find their way across thousands of miles to the very beaches where they hatched. Now, researchers reporting in the journal Current Biology on May 6 have some of the first solid evidence that sharks also rely on magnetic fields for their long-distance forays across the sea.

Seals and sea lions are fast swimming ocean predators that use their flippers to literally fly through the water. But not all seals are the same: some swim with their front flippers while others propel themselves with their back feet.

Young people need additional support and protection in the criminal justice system because they are more susceptible to pleading guilty when innocent, a new study argues.

Developing a new generation of artificial muscles and soft nanorobots for drug delivery are some of the long-term goals of 4D-BIOMAP, an ERC research project being undertaken by the Universidad Carlos III de Madrid (UC3M).This project develops cross-cutting bio-magneto-mechanical methodologies to stimulate and control biological processes such as cell migration and proliferation, the organism's electrophysiological response, and the origin and development of soft tissue pathologies.

A study designed to enroll an equal number of Black and white men with advanced prostate cancer confirms key findings that have been evident in retrospective analyses and suggest potential new avenues for treating Black patients who disproportionately die of the disease.

A program that provides ongoing support to patients with painful conditions and complex medication regimens may also help them avoid using potentially risky opioid pain medications, or reduce the amount they use, a new study finds.

With mass shootings and other seemingly meaningless acts of violence in the headlines all too frequently, strategies to assess the risk and reduce the potential for violent acts are sorely needed. The fourth in a series of five columns devoted to therapeutic risk management of violence - focusing on a method called chain analysis to identify and target pathways leading to violent thoughts and behaviors - appears in the May issue of the Journal of Psychiatric Practice.

MIAMI--A new study led by scientists at the University of Miami (UM) Rosenstiel School of Marine and Atmospheric Science tracked large sharks in Miami and The Bahamas to understand how these migratory animals respond to major storms, like hurricanes.

Humans are exposed to a variety of toxins and chemicals every day. According to the epithelial barrier hypothesis, exposure to many of these substances damages the epithelium, the thin layer of cells that covers the surface of our skin, lungs and intestine. Defective epithelial barriers have been linked to a rise in almost two billion allergic, autoimmune, neurodegenerative and psychiatric diseases.

Calculations predict that atom-thin sheets of carbon chalcogenides will grow wider when stretched in any direction.