On 9 January 2023, the United Nations released its latest report on the status of the ozone layer. It highlighted that this protective barrier is on track toward recovery and should be fully restored by the second half of ...
Earth Sciences
4 hours ago
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What wiped out the dinosaurs? A meteorite plummeting to Earth is only part of the story, a new study suggests. Climate change triggered by massive volcanic eruptions may have ultimately set the stage for the dinosaur extinction, ...
Earth Sciences
Nov 27, 2023
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The waters of the St. Lawrence Estuary are running out of breath. The lack of oxygen in deep waters is affecting the organisms that live on the bottom of the estuary.
Ecology
Nov 22, 2023
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Greenhouse gas concentrations in the atmosphere hit new record highs in 2022, with no end in sight to the rising trend, the United Nations warned Wednesday.
Environment
Nov 15, 2023
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The tropics are home to more than 75% of all species and are projected to support 50% of the world's human population by mid-century, but little is known about mercury pollution in these life-filled regions.
Plants & Animals
Nov 14, 2023
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Hollow-structured supported metal catalysts (i.e. nanoreactor catalysts) with encapsulated active sites and well-defined shells provide an ideal place for multicomponents to react or transform cooperatively in an orderly ...
Nanomaterials
Nov 1, 2023
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Many people have experienced a muddy off-flavor in farmed fish. While the aquaculture industry has known about the problem for 20 years, it continues to impact the consumption of otherwise healthy and potentially sustainable ...
Ecology
Oct 19, 2023
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Macquarie University scientists have contributed to a new study that suggests we may need to rethink current disinfection strategies at home and in hospitals in the fight against superbugs.
Cell & Microbiology
Oct 10, 2023
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Researchers from King Khalid University have made significant progress in addressing environmental concerns related to the oil industry by developing an advanced wastewater treatment system. The team, led by Dr. Atef El Jery, ...
Environment
Sep 27, 2023
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Ethylene is an essential plant hormone at low concentrations. Concentrations in the field rarely exceed 5 nmol⋅mol−1 (0.005 ppm), but it can accumulate as a gas in closed, indoor environments. These elevated levels can ...
Biotechnology
Sep 25, 2023
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In chemistry, concentration is defined as the abundance of a constituent divided by the total volume of a mixture. Four types can be distinguished: mass concentration, molar concentration, number concentration, and volume concentration. The term concentration can be applied to any kind of chemical mixture, but most frequently it refers to solutes in homogeneous solutions.
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