UCLA chemists have reported the key chemical discovery necessary for the creation of a small, electronic marijuana breathalyzer. The research is published in Organic Letters, a peer-reviewed journal of the American Chemical Society.

Metamaterials, which are engineered to have properties not found in nature, have long been developed and studied because of their unique features and exciting applications. However, the physics behind their thermal emission properties have remained unclear to researchers—until now.

The way ancient Greeks thought about the natural environment and their relationship to it is relevant to how we respond to environmental crises today. In her new book, "Other Natures," Clara Bosak-Schroeder, a classics professor at the University of Illinois at Urbana-Champaign, looks at how the ethnographies written by ancient Greeks reveal how they explored ideas about consumption and their use...

A team of astronomers has discovered that the closest known brown dwarf, Luhman 16A, shows signs of cloud bands similar to those seen on Jupiter and Saturn. This is the first time scientists have used the technique of polarimetry to determine the properties of atmospheric clouds outside of the solar system, or exoclouds.

A study of female astronauts has assessed the risk of blood clots associated with spaceflight.

Two decades ago, an experiment at the U.S. Department of Energy's (DOE) Brookhaven National Laboratory pinpointed a mysterious mismatch between established particle physics theory and actual lab measurements. When researchers gauged the behavior of a subatomic particle called the muon, the results did not agree with theoretical calculations, posing a potential challenge to the Standard Model—our...

By 2050, the United States will likely be exposed to a larger number of extreme climate events, including more frequent heat waves, longer droughts and more intense floods, which can lead to greater risks for human health, ecosystem stability and regional economies.

A new study offers a rare look at how black and white people listen to each other during political discussions, including those that touch on controversial issues about race.

Most electrical activity in vertebrates and invertebrates occurs at extremely low frequencies, and the origin—and medical potential—of these frequencies have eluded scientists. Now a Tel Aviv University study provides evidence for a direct link between electrical fields in the atmosphere and those found in living organisms, including humans.

Scientists have untangled a sensory circuit in worms that allows them to choose whether to spend energy on self-defence or rely on the help of nearby bacteria, a new study in eLife reveals.

Researchers from University of Nebraska and York University published a new paper in the Journal of Marketing that examines what can happen when 'little guys' work together to pursue common interests.

NUS scientists have discovered a new mechanism for selective electrochemical reduction of carbon dioxide (CO2) to ethanol using copper-silver (Cu-Ag) composite catalysts.

A webtool giving an overview of climate change in Europe and predicting subsequent developments was created as a joint collaboration between French, Spanish, German and Estonian researchers.

Expansions by groups of humans were common during prehistoric times, after the adoption of agriculture. Among other factors, this is due to population growth of farmers which was greater than of hunter-gatherers. We can find one example of this during the Neolithic period, when farming was introduced to Europe by migrations from the Middle East.

Water is a global resource which is essential for life on our planet, thus hydrological research and the study of its management has also become crucial work for the continuity of life on Earth. The availability of public data on water behavior such as data about river flow and rainfall are key for the research community in order to create a world water map. When drawing this map, the public and...

Ischemia is a disease that occurs when tissue stops receiving the vascular supply it needs. Though it can affect several organs, the digestive system is one of the most harmed by the loss of blood circulation, making it one of the most common veterinary emergencies, especially among certain animals such as dogs and horses.

The yellow-legged gull has a high ability to adapt to human activities and benefit from these as a food resource all year. This is stated in a scientific article published in the journal Ecology and Evolution whose first author is the researcher Francisco Ramírez, from the Faculty of Biology and the Biodiversity Research Institute (IRBio) of the University of Barcelona.

Logging of native forests increases the risk and severity of fire and likely had a profound effect on the recent, catastrophic Australian bushfires, according to new research.

Electrochemical reactions that occur in processes like ethanolic fermentation include the transformation of sugars into alcohol and carbon dioxide. Similar processes occur when the human body breaks down food, drugs or other compounds.

By manipulating the expression of one gene, geneticists can induce a form of "stress memory" in plants that is inherited by some progeny, giving them the potential for more vigorous, hardy and productive growth, according to Penn State researchers, who suggest the discovery has significant implications for plant breeding.

Quantum photonics involves a new type of technology that relies on photons, the elementary particle of light. These photons can potentially carry quantum bits of information over large distances. If the photon source could be placed on a single chip and made to produce photons at a high rate, this could enable high-speed quantum communication or information processing, which would be a major...

While tracing the movement of Escherichia coli, a team of French researchers noticed that near solid surfaces, the bacteria run in circles. Loop after loop, the tracing almost looks like an Olympic figure skating rink before the Zamboni irons the sheet of ice smooth. Breaking down E. coli's routine step by step, the scientists identified a signature move—surface tumbling. The work appears May 5...

Humans depend on fossil fuels as their primary energy source, especially in transportation. However, fossil fuels are both unsustainable and unsafe, serving as the largest source of greenhouse gas emissions and leading to adverse respiratory effects and devastation due to global warming.

Identifying sources of light plays an important role in the development of many photonic technologies, such as lidar, remote sensing, and microscopy. Traditionally, identifying light sources as diverse as sunlight, laser radiation, or molecule fluorescence has required millions of measurements, particularly in low-light environments, which limits the realistic implementation of quantum photonic...