Daily exposure to certain chemicals used to make plastic household items could be linked to more than 356,000 global deaths from heart disease in 2018 alone, a new analysis of population surveys shows. While the chemicals, called phthalates, are in widespread use globally, the Middle East, South Asia, East Asia, and the Pacific bore a much larger share of the death toll than others -- about three-fourths of the total.

Scientists believe they have found a way to improve warning systems for vulnerable communities threatened by humid heatwaves, which are on the rise due to climate change and can be damaging and even fatal to human health. The study analysed how patterns of recent rainfall can interact with dry or moist land conditions to influence the risk of extreme humid heat in the global tropics and subtropics.

Those who climb indoors are doing something for their health. But climbing shoes contain chemicals of concern that can enter the lungs of climbers through the abrasion of the soles. In a recent study, researchers have shown that high concentrations of potentially harmful chemicals from climbing shoe soles can be found in the air of bouldering gyms, in some cases higher than on a busy street.

Scientists have developed a highly sensitive method to detect illegal opioids and a veterinary sedative in Australia's wastewater system, providing a vital early warning tool to public health authorities.

An infectious diseases detection platform demonstrated over a two-year trial that it stops outbreaks, saves lives and cuts costs, making the case for development of a national early outbreak detection database.

A study analyzing data from nationally representative dietary surveys and mortality data from eight countries (Australia, Brazil, Canada, Chile, Colombia, Mexico, United Kingdom, and United States) shows that premature deaths attributable to consumption of ultraprocessed foods (UPFs) increase significantly according to their share in individuals' total energy intake. The new study reinforces the call for global action to reduce UPF consumption, supported by regulatory and fiscal policies that foster healthier environments.

It is now possible to obtain three-dimensional, high-resolution images of enzyme activity in tissue samples or whole organs -- thanks to probe molecules that anchor fluorescent dyes within tissue as they are activated by enzymes. The organ being mapped is made transparent by a clearing process. This allowed for visualization of differences in aminopeptidase N activity and the effects of inhibitors in mouse kidneys.

Scientists suggest social spiders are more about going with the flow than sticking to a role, after new research challenges the idea of fixed personalities.

Even under today's climatic conditions, the long-extinct straight-tusked elephant could still live in Europe. This is the conclusion of a recent study. For this finding, the research group combined fossil finds with reconstructions of past climates.

The interaction between growth and the active migration of cells plays a crucial role in the spatial mixing of growing cell colonies. This connection will lay the groundwork for new approaches to understanding the dynamics of bacterial colonies and tumors.

Forget fleeting friendships the social secrets of the long-tailed tit has revealed an extraordinary level of family commitment even during migratory journeys. Birds that babysit: scientists reveal long-tailed tits' remarkable family bonds.

A technique to cool the planet, in which particles are added to the atmosphere to reflect sunlight, would not require developing special aircraft but could be achieved using existing large planes, according to a new modelling study.

With more than 181.5 billion tons of wood produced globally each year, a new method could revolutionize how we build sustainably. By infusing red oak with ferrihydrite using a simple, low-cost process, researchers strengthened the wood at the cellular level without adding weight or altering flexibility -- offering a durable, eco-friendly alternative to steel and concrete. The treated wood retains its natural behavior but gains internal durability -- paving the way for greener alternatives in construction, furniture and flooring.

Climate change is increasing the risk of wildfires in many regions of the world. This is due partly to specific weather conditions -- known as fire weather -- that facilitate the spread of wildfires. Researchers have found that fire weather seasons are increasingly overlapping between eastern Australia and western North America. The research team examined the causes of this shift and its implications for cross-border cooperation between fire services in Canada, the US, and Australia.

Flash floods resulting from extreme rainfall pose a major risk to people and infrastructure, especially in urban areas. Higher temperatures due to global climate change affect continuous rainfall and short rain showers in somewhat equal measure. However, if both types of precipitation occur at the same time, as is typical for thunderstorm cloud clusters, the amount of precipitation increases more strongly with increasing temperature, as shown in a recent study.

Scientists built a model that allows them to diminish phage communities from a mouse gut microbiome -- and then bring them back -- without affecting the bacteria. On a test run of their model, researchers found evidence that phages may increase gut bacteria's sensitivity to antibiotics.

The influenza virus manipulates the body's gene regulation system to accelerate its own spread. A new study also shows that an already approved drug could help strengthen immune defenses -- though its effect in humans remains to be confirmed.

Researchers have developed a new catalyst design capable of pushing the projected fuel cell catalyst lifespans to 200,000 hours. The research marks a significant step toward the widespread adoption of fuel cell technology in heavy-duty vehicles, such as long-haul tractor trailers. While platinum-alloy catalysts have historically delivered superior chemical reactions, the alloying elements leach out over time, diminishing catalytic performance. The degradation is further accelerated by the demanding voltage cycles required to power heavy-duty vehicles. To address this challenge, the team has engineered a durable catalyst architecture with a novel design that shields platinum from the degradation typically observed in alloy systems.

Falling off a horse at high-speed changes the impact to the rider's head and the parameters for a quality helmet, according to new research. The findings indicate that head impacts during falls at high speed generate unique head rotation, which in turn, directly affects helmet behavior.

New research asks how local and regional factors determine the makeup of plant species in grasslands. Researchers from a restoration ecology lab are attempting to solve a longstanding question in community ecology: how do regional and local factors jointly determine biodiversity?