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Model of Antarctica's water enhances sea level forecasts
Researchers have generated the first dataset of water flow beneath the entire Antarctic Ice Sheet, which will lead to more accurate projections of sea level rise. The team modeled Antarctica's subglacial environment. The dataset represents the researchers' best approximation of what the water flow underneath the ice sheet might currently look like. The results include numerous subglacial lakes developing below ice streams in both East and West Antarctica, and an extensive network of subglacial water channels that discharge large fluxes of water under many major glaciers.
Evidence of cannibalism 18,000 years ago
An international research team has gained new insights into the burial rituals of Late Ice Age societies in Central Europe. Signs of human remains from the Maszycka Cave in southern Poland being manipulated indicate systematic dissection of the deceased, as well as cannibalism.
New autonomous system to monitor Arctic's melting ice
Researchers have designed an alternative, autonomous observational method to monitor the Arctic's melting ice, which holds promise for improving the autonomy of marine vehicles, aiding in maritime missions, and gaining a deeper understanding of how melting Arctic sea ice affects marine ecosystems. Their conceptual design features a small waterplane area twin hull vessel that acts as a docking and charging station for autonomous underwater vehicles and unmanned aerial vehicles, using solar and turbine energy to enable continuous monitoring.
An Arctic 'beyond recognition' by 2100
Based on the current pledges of countries for limiting their emissions of greenhouse gases, global temperatures are projected to reach 2.7 degrees Celsius beyond pre-industrial levels by the end of this century. A new review paper highlights how this would dramatically reshape the Arctic, the fastest-warming region of Earth.
Scientist discovers 16 new grasshopper species, champions desert biodiversity
A scientist has discovered a hopping treasure trove -- 16 new species of grasshoppers living in the thorny scrubs of U.S. and Mexican deserts.
Ice streams move due to tiny ice quakes
An international team of researchers has shown that countless tiny ice quakes take place in one of Greenland's mightiest ice streams. This finding will allow the flowing of the ice sheet and associated changes in sea level to be estimated more accurately.
Discovery of water droplet freezing bridges atmospheric science, climate solutions
A groundbreaking study on the freezing of water droplets suspended in air sheds light on a key process in Earth's water cycle: the transformation of supercooled water into ice.
Temperature, rainfall and tides speed glacier flow on a daily basis
Detailed study of a Greenland glacier's flow rate reveals the impact of environmental conditions.
More, bigger crevasses open up in Greenland ice sheet, threatening increased sea level rise
More crevasse activity could lead to positive feedback loop threatening Greenland glacier's stability.
Groundwater in Arctic is delivering more carbon into the ocean than was previously known
A relatively small amount of groundwater trickling through Alaska's tundra is releasing huge quantities of carbon into the ocean, where it can contribute to climate change.
Polar bear population decline the direct result of extended 'energy deficit' due to lack of food
U of T Scarborough researchers have directly linked population decline in polar bears living in Western Hudson Bay to shrinking sea ice caused by climate change.
Walk like a ... gecko? Animal footpads inspire a polymer that sticks to ice
A solution to injuries from slips and falls may be found underfoot -- literally. The footpads of geckos have hydrophilic (water-loving) mechanisms that allow the little animals to easily move over moist, slick surfaces. Researchers report using silicone rubber enhanced with zirconia nanoparticles to create a gecko-inspired slip-resistant polymer. They say the material, which sticks to ice, could be incorporated into shoe soles to reduce injuries in humans.
Lead contamination in ancient Greece points to societal change
Studies of sediment cores from the sea floor and the coastal regions surrounding the Aegean Sea show that humans contaminated the environment with lead early on in antiquity. Geoscientists conducted the analyses, which revealed that human activity in the region resulted in lead contamination of the environment approximately 5,200 years ago -- much earlier than previously known. Combined with the results of pollen analyses from the sediment cores, this contamination also offers insights into socioeconomic change in the Aegean.
Antarctic fast ice secrets
Scientists have successfully analyzed more than 30 years of vital data on the thickness of landfast sea ice in Antarctica's McMurdo Sound, which will prove useful to measure future impacts of climate change.
Bad hair bears! Greasy hair gives polar bears fur with anti-icing properties
Scientists have discovered the anti-icing secret of polar bear fur -- something that allows one of the planet's most iconic animals to survive and thrive in one of its most punishing climates. That secret? Greasy hair. After some polar sleuthing, which involved scrutiny of hair collected from six polar bears in the wild, the scientists homed in on the hair 'sebum' (or grease) as the all-important protectant. This sebum, which is made up of cholesterol, diacylglycerols, and fatty acids, makes it very hard for ice to attach to their fur. While this finding sheds fascinating new light on our understanding of polar bear -- and even Inuit -- ecology, it may also have a suite of unrelated applications, with a similar concoction of artificially made sebum promising to be useful as an anti-ice surface coating, or in next-gen ski skins used by skiers and snowboarders.
Mapping Antarctica's hidden ice-free lands: a blueprint for conservation
Researchers unveil a new map and classification system that will help protect the unique plants and animals of Earth's most remote and fragile continent.
Antarctic ice sheet faces 'death by a thousand cuts'
Smaller calving events, not large icebergs, drive Antarctic ice sheet loss.
Global sea level very likely to rise between 0.5 and 1.9 meters by 2100 under high-emissions scenario
An interdisciplinary team of researchers has projected that if the rate of global CO2 emissions continues to increase and reaches a high emission scenario, sea levels would as a result very likely rise between 0.5 and 1.9 meters by 2100. The high end of this projection's range is 90 centimeters higher than the latest United Nations' global projection of 0.6 to 1.0 meters.
How animal poop helps ecosystems adapt to climate change
Relatives of the llama are dropping dung as they venture into higher elevations in the Andes Mountains, providing a nutrient-rich environment for life to thrive despite glacier loss.
Unraveling the connection between Canadian wildfires and Arctic ice clouds
Ice nucleating particles as a kind of aerosols have a significant impact on the Arctic climate by promoting the formation of ice clouds at a temperature above -- 38 degrees Celsius. Wildfires in mid-latitudinal areas are a major source of these aerosols. However, a direct observation of wildfire-emitted aerosols facilitating ice cloud formation has never been documented. Now, using field and climate data, scientists have linked aerosols emitted by Canadian wildfires in 2023 to the formation of ice clouds over the Arctic Ocean.
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