Tokyo, Japan - Researchers from Tokyo Metropolitan University have studied the properties of mixtures of silicone-coated "magic sand", a popular kid's toy, and normal sand. Silicone-coated sand particles were found to interact with each other only, and not with other sand particles. The team discovered that adding silicone-coated sand beyond a certain threshold leads to an abrupt change in clustering and rigidity, a simple, useful way to potentially tune the flow of granular materials for industry.
Can Switzerland, as planned, cut its CO2 emissions to zero by 2050? In a study, researchers at the Paul Scherrer Institute PSI have investigated what measures would be necessary to achieve this reduction and how much it might cost per person.
Researchers at Scripps Institution of Oceanography at UC San Diego examining 14 years of hospital admissions data conclude that the fine particles in wildfire smoke can be several times more harmful to human respiratory health than particulate matter from other sources such as car exhaust. While this distinction has been previously identified in laboratory experiments, the new study confirms it at the population level.
Analyses by the University of Innsbruck show that traffic restrictions during the first lockdown last March led to a sharp drop in air pollutant emissions, significantly more than for carbon dioxide. The study confirms the assumption that traffic is significantly underestimated as a source of nitrogen oxide pollution in cities and is responsible for over 90 percent of these pollutants.
Researchers at Princeton University and the University of Miami found that the latest generation of high-sensitivity climate models do not provide a plausible scenario of Earth's future climate. These models project that clouds moderate greenhouse gas-induced warming -- particularly in the northern hemisphere -- much more than climate records show actually happens. The results provide a cautionary tale on interpreting climate simulations, which can determine the aggressiveness of carbon-mitigation policies.
The landmark 2015 Paris Agreement resulted in multiple studies examining the impact of global temperature increases, but these rarely investigate the effect of warming on "fire weather" conditions. Now, in a new study, scientists have found that by projecting two different types of fire weather conditions, an additional half-degree of warming could drastically increase the likelihood and significance of blazes worldwide.
The models used to produce global climate scenarios may overestimate the energy and emission savings from improved energy efficiency, warns new research led by academics at the University of Sussex Business School and the University of Leeds.
New research from The University of Manchester has identified various ways in which UK higher education institutions are beginning to tackle emissions associated with business travel and catering. These are two substantial contributors to emissions in this sector, and difficult to decarbonise. The findings suggest need for further sector-wide efforts to tackle the planet's most pressing issue.
New research shows 64 countries cut their fossil CO2 emissions during 2016-2019, but the rate of reduction needs to increase tenfold to meet the Paris Agreement aims to tackle climate change.
Fireworks are used in celebrations around the world, including Independence Day in the U.S., the Lantern Festival in China and the Diwali Festival in India. However, the popular pyrotechnic displays emit large amounts of pollutants into the atmosphere, sometimes causing severe air pollution. Now, researchers reporting in ACS' Environmental Science & Technology have estimated that, although so-called environmentally friendly fireworks emit 15-65% less particulate matter than traditional fireworks, they still significantly deteriorate air quality.