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Categories: Geoscience: Environmental Issues, Geoscience: Landslides
Published Cheap charcoal air filters offer improvements to in-vehicle air quality
(via sciencedaily.com) Original source A cheap charcoal air filter can reduce nitrogen dioxide (NO2) inside vehicles by as much as 90%, compared to levels outside the vehicle.
Published Sea level rise poses particular risk for Asian megacities
(via sciencedaily.com) Original source Sea level rise this century may disproportionately affect certain Asian megacities, according to new research that looks at the effects of natural sea level fluctuations in addition to climate change. The study identified several Asian megacities that may face especially significant risks by 2100, including Chennai, Kolkata, Yangon, Bangkok, Ho Chi Minh City, and Manila.
Published Ocean surface tipping point could accelerate climate change
(via sciencedaily.com) Original source A study has found that intense global warming could shut down the ocean's ability to soak up carbon dioxide, leading to accelerated global warming as the greenhouse gas accumulates in the atmosphere. The decline happens because of a surface layer of low-alkalinity water that emerges during extreme warming that hinders the ability of the oceans to absorb CO2. The study is based on a climate simulation configured to a worst-case emissions scenario that the researchers say must be avoided at all costs.
Published Toothed whales catch food in the deep using vocal fry
(via sciencedaily.com) Toothed whales, such as dolphins, killer whales and sperm whales communicate and catch food exclusively with sound. Now researchers have for the first time found they evolved a new sound source in their nose that is functionally the same as the human larynx.
Published Catalyst purifies herbicide-tainted water and produces hydrogen
(via sciencedaily.com) Researchers have developed a dual-purpose catalyst that purifies herbicide-tainted water while also producing hydrogen.
Published Robot provides unprecedented views below Antarctic ice shelf
(via sciencedaily.com) With the help of an underwater robot, known as Icefin, a U.S.- New Zealand research team has obtained an unprecedented look inside a crevasse at Kamb Ice Stream -- revealing more than a century of geological processes beneath the Antarctic ice.
Published Coastal water pollution transfers to the air in sea spray aerosol and reaches people on land
(via sciencedaily.com) New research has confirmed that coastal water pollution transfers to the atmosphere in sea spray aerosol, which can reach people beyond just beachgoers, surfers, and swimmers.
Published Wisconsin cave holds tantalizing clues to ancient climate changes, future shifts
(via sciencedaily.com) A newly published study of a stalagmite found in Cave of the Mounds reveals previously undetected history of the local climate going back thousands of years. Researchers describe evidence for an ice age punctuated by massive and abrupt warming events across much of the Northern Hemisphere.
Published Study forecasts tile drainage and crop rotation changes for nitrogen loss
(via sciencedaily.com) Midwestern agriculture contributes the vast majority of nitrogen in the Gulf of Mexico, causing an oxygen-starved hypoxic zone and challenging coastal economies. State and federal policies have tried for decades to provide solutions and incentives, but the hypoxic zone keeps coming back. A recent study offers a new way to understand Midwestern nitrogen dynamics and forecasts future nitrogen loads under various management scenarios across the region.
Published The counting of nine billion trees could help manage climate credits and nature restoration
(via sciencedaily.com) Researchers have developed a method that has now mapped several billion trees and their carbon uptake in Africa's Sahel. In the future, the method could be used to monitor whether climate credit purchases have a positive effect on the number of trees and whether nature restoration is working.
Published Reassessment of Storegga event: Second major landslide recognized
(via sciencedaily.com) Submarine landslides have a large tsunami potential and occurred on the central Norwegian shelf more frequently in the past than previously thought. Scientists investigate the Nyegga landslide off the coast of Norway. The submarine landslide occurred in the same area as the well-known Storegga event 8,150 years ago. The new findings suggest that approximately one-third of the seafloor material missing -- previously attributed to the Storegga event -- was removed by the Nyegga event 20,000 years ago. This raises questions about the frequency of large submarine landslides and their associated tsunami hazard.
Published Sustainable process for the production of vanillin from lignin makes further progress
(via sciencedaily.com) The demand for vanillin vastly outstrips the natural resources of this flavoring agent. A chemical process is thus used to produce the required large quantities of vanillin from petroleum, which is far less expensive than obtaining the substance from fermented genuine vanilla pods. Another alternative is to make vanillin from lignin, a waste product of the wood pulping industry. A team has now managed to further enhance their method of electrochemical production of vanillin from lignin in that they employ a 'green' oxidation method for this purpose.
Published Toilet paper is an unexpected source of PFAS in wastewater
(via sciencedaily.com) Wastewater can provide clues about a community's infectious disease status, and even its prescription and illicit drug use. But looking at sewage also provides information on persistent and potentially harmful compounds, such as per- and polyfluoroalkyl substances (PFAS), that get released into the environment. Now, researchers report an unexpected source of these substances in wastewater systems -- toilet paper.
Published Keto vs vegan: Study of popular diets finds over fourfold difference in carbon footprints
(via sciencedaily.com) New research has estimated the carbon footprints and diet quality of six popular diets. The vegan and vegetarian diets were found to be produce the least amount of carbon dioxide while keto and paleo diets ranked lowest in sustainability and diet quality.
Published Wastewater sector emits nearly twice as much methane as previously thought
(via sciencedaily.com) Researchers reveal that actual methane emissions from the wastewater treatment sector in the U.S. are nearly double what existing international guidelines would predict.
Published Experts demand fire safety policy change over health impact of widely used flame retardants
(via sciencedaily.com) Leading environmental health experts have called for a comprehensive review of the UK's fire safety regulations, with a focus on the environmental and health risks of current chemical flame retardants.
Published Australia's rarest bird of prey disappearing at alarming rate
(via sciencedaily.com) Australia's rarest bird of prey -- the red goshawk -- is facing extinction, with Cape York Peninsula now the only place in Queensland known to support breeding populations.
Published Breathing is going to get tougher
(via sciencedaily.com) Not all pollution comes from people. When global temperatures increase by 4 degrees Celsius, harmful plant emissions and dust will also increase by as much as 14 percent, according to new research.
Published Pakistan streamflow timing will become three times faster by end of century
(via sciencedaily.com) A research team investigated changes in seasonal variability of streamflow over Pakistan from bias-corrected regional climate projections.
Published Climate trends in the west, today and 11,000 years ago
(via sciencedaily.com) What we think of as the classic West Coast climate began just about 4,000 years ago, finds a study on climate trends of the Holocene era.