Ozone is a pollutant at ground level, but very high in the atmosphere's 'ozone layer,' it absorbs damaging ultraviolet radiation. Past studies have examined ozone levels in the Southern Hemisphere, but little is known about levels of the molecule in Antarctica over long periods. Now, researchers reporting in ACS' Environmental Science & Technology have analyzed more than 25 years of Antarctic data, finding that concentrations near the ground arose from both natural and human-related sources.
Pesticides safeguard agricultural yields by controlling insects, fungi, and weeds. However, they also enter streams and damage the aquatic communities. In a nationwide monitoring program, scientists led by the Helmholtz Centre for Environmental Research have shown that the governmental thresholds for pesticides are too high and that these levels are still exceeded in over 80% of water bodies. The loss of biodiversity can only be halted if the environmental risk assessment of pesticides is revised.
Just two weeks of citalopram exposure caused changes in crayfish behavior, with the potential to disrupt stream ecosystem processes like nutrient cycling, oxygen levels, and algal growth.
Expose crayfish to antidepressants, and they become more outgoing -- but that might not be such a positive thing for these freshwater crustaceans, according to a new study.
The concentration of potentially toxic metals is increasing in the population of the franciscana dolphin --a small cetacean, endemic from the Rio de la Plata and an endangered species-- according to a study led by a team of the Faculty of Biology and the Biodiversity Research Institute (IRBio), published in the journal Science of The Total Environment.
A new study evaluates the contribution of the Fenton-like reaction to atmospheric oxidation, and improves the consistency of model-simulated and field-observed secondary organic aerosol budgets.
A special issue of Advances in Atmospheric Sciences summarizes current work on atmospheric oxidation capacity and advocates further investigations.
Maritime litter is among the most urgent global pollution issues. Marine scientist Nikoleta Bellou and her team at Helmholtz-Zentrum Hereon have published an overview study of solutions for prevention, monitoring, and removal in the renowned scientifically journal Nature Sustainability. They found that reducing ocean pollution requires more support, integration, and creative political decisiveness.
Scientists have devised a novel way of tackling the mounting issue of plastic pollution... by using bacteria to transform plastic waste into vanilla flavouring.
Researchers from the Department of Mechanical Engineering at the UPV/EHU are studying and optimising the mechanical and thermal properties of new mortars and concrete made using industrial by-products, such as lime mud from the paper industry, brass fibres and furnace slag, with the aim of reducing the consumption of energy and natural resources and fostering the circular economy.