Cambio Climático


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  • Top Environment News -- ScienceDaily
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A team of sustainability scientists recently announced that they have developed a community-based framework, founded on extensive local and traditional knowledge, to help assess and respond to the kinds of ecological threats that are widely dispersed across a varied landscape and whose solutions are not immediately obvious. The framework, which was developed to address watershed issues in Honduras's Lake Yojoa, is widely applicable to a broad range of threats facing ecological commons wherever they may occur around the world. [...]

A protein in the immune system programmed to protect the body from fungal infections is also responsible for exacerbating the severity of certain autoimmune diseases such as irritable bowel disease (IBS), type 1 diabetes, eczema and other chronic disorders, new research has found.  The discovery could pave the way for new and more effective drugs, without the nasty side effects of existing treatments. In addition to helping to manage severe autoimmune conditions, the breakthrough could also help treat all types of cancer.   [...]

Tropical coral reefs are among our most spectacular ecosystems, yet a rapidly warming planet threatens the future survival of many reefs. However, there may be hope for some tropical reefs in the form of feathered friends. A new study has found that the presence of seabirds on islands adjacent to tropical coral reefs can boost coral growth rates on those reefs by more than double. [...]

New research has shown that fire-ice -- frozen methane which is trapped as a solid under our oceans -- is vulnerable to melting due to climate change and could be released into the sea. [...]

The ocean is a global life-support system, and climate change causes such as ocean warming, acidification, deoxygenation, and nitrogen-deposition alter the delicate microbial population in oceans. The marine microbial community plays an important role in the production of greenhouse gases like nitrous oxide and methane. Scientists have explored the climate change impact on marine microbes. Their research helps raise awareness about climate change severity and the importance of ocean resources. [...]

The fracturing and friction of coffee beans during grinding generates electricity that causes coffee particles to clump together and stick to the grinder. Researchers report that coffee beans with higher internal moisture produce less static electricity, which means less coffee is wasted and there is less mess to clean up. This effect can be simulated by adding a small amount of water to beans immediately before grinding them. The team also showed that grinding with a splash of water produces more consistent and intense espresso. [...]

In southern Germany just north of the Danube, there lies a large circular depression between the hilly surroundings: the Nördlinger Ries. Almost 15 million years ago, an asteroid struck this spot. Today, the impact crater is one of the most useful analogues for asteroid craters on early Mars. Studying the deposits of the former lake that formed in the crater is particularly informative. These deposits have been of great interest ever since NASA began exploring Martian craters for signs of water and life on Mars. [...]

Researchers have provided detailed maps of how 144 common invasive plants species will react to 2° Celsius of climate change in the eastern U.S., as well as the role that garden centers currently play in seeding future invasions. [...]

Sniffles, snorts and blows of runny noses are the hallmarks of cold and flu season -- and that increase in mucus is exactly what bacteria use to mount a coordinated attack on the immune system, according to a new study. The team found that the thicker the mucus, the better the bacteria are able to swarm. The findings could have implications for treatments that reduce the ability of bacteria to spread. [...]

Scientists' debut 'reverse metabolomics,' a groundbreaking approach to advancing microbiome research. They use the technique to discover hundreds of new human molecules, and a new biomarker and therapeutic target for inflammatory bowel disease. [...]

Pregnant women eating modern diets are missing key nutrients needed for them and their babies, and this could get worse with the move to plant-based foods. Scientists surveying more than 1,700 women found most were missing vitamins usually found in meat and dairy, including B12, B6 and D, folic acid and riboflavin which are essential for the development of fetuses in the womb. [...]

A new report equips policymakers with the latest and most pivotal climate science research from the previous 18 months, synthesized to help inform negotiations at COP28 and policy implementation through 2024 and beyond. [...]

Researchers have uncovered the intricate molecular mechanism used by parasitic phytoplasma bacteria, known for inducing 'zombie-like' effects in plants. [...]

A new study estimates 152,753 excess infant deaths were attributable to living in flood-prone areas in Bangladesh over the past 30 years. The findings begin to unspool the long term public health impacts of recurring environmental hazards such as flooding, wildfires, or extreme heat, many of which are becoming more common or more severe under climate change. [...]

Researchers have developed a promising new solar-powered atmospheric water harvesting technology that could help provide enough drinking water for people to survive in difficult, dryland areas: They synthesized a super hygroscopic gel capable of absorbing and retaining an unparalleled amount of water. One kilogram of dry gel could adsorb 1.18 kilograms of water in arid atmospheric environments and up to 6.4 kilograms in humid atmospheric environments. This hygroscopic gel was simple and inexpensive to prepare and would consequently be suitable for large-scale preparation. [...]

An interdisciplinary research team is using artificial intelligence (AI) to identify microplastics faster and more accurately than ever before. [...]

Researchers report that mice display behavior that resembles self-recognition when they see themselves in the mirror. When the researchers marked the foreheads of black-furred mice with a spot of white ink, the mice spent more time grooming their heads in front of the mirror -- presumably to try and wash away the ink spot. However, the mice only showed this self-recognition-like behavior if they were already accustomed to mirrors, if they had socialized with other mice who looked like them, and if the ink spot was relatively large. [...]

Scientists have developed a pioneering new method that uses deep learning and a new technique called 'targeted augmentation' to track neurons in moving and deforming animals. [...]

Aquaporins, which move water through membranes of plant cells, were not thought to be able to permeate sugar molecules, but researchers have observed sucrose transport in plant aquaporins for the first time, challenging this theory. [...]

A new study concludes that wildfires originating in the western United States and Canada have erased air quality gains over the past two decades and caused an increase of premature deaths in fire-prone areas and downwind regions, primarily in the western U.S. [...]

Global carbon emissions from fossil fuels have risen again in 2023 -- reaching record levels, according to new research. [...]

As the climate warms, preserving forest cover will be increasingly important for wildlife conservation, finds a study of North American mammals. [...]

A new sensor on the submersible Alvin discovered reactive oxygen species for the first time in deep-sea corals, broadening our understanding of fundamental coral physiology. [...]

Utah's variable topography produces a tremendous range of wildfire behavior, according to new research. [...]

A biology student studied more than 600,000 wildlife rehabilitation center records to look at the human impact on wild animals, from lead poisonings to window strikes to vehicle collisions. [...]

Global warming can still be limited to 1.5°C by 2100 while ensuring that the poor are not hit hardest by climate policies and climate impacts. This is achieved by immediately introducing broad carbon pricing together with re-distributive policies using carbon pricing revenues and further measures to reduce energy consumption, accelerate technological transitions, and transform the land sector. [...]

A consideration of how mountains influence El Niño and La Niña-induced precipitation change in western North America may be the ticket to more informed water conservation planning along the Colorado River, new research suggests. [...]

Inspired by a small and slow snail, scientists have developed a robot protype that may one day scoop up microplastics from the surfaces of oceans, seas and lakes. [...]

Pregnancy brings a rise in pancreatic beta cells -- the cells that produce insulin. Shortly after birth, these cells return to their normal levels. The mechanisms behind this process had remained a mystery. But now a research group has revealed that white blood cells called macrophages 'eat' these cells.  [...]

Scientists used weather radar data to map bird stopover density in the United States and found that artificial light is a top indicator of where birds will land. City lights lure birds into what can be an ecological trap -- with buildings that lead to collisions, less habitat, scarcer food, and more people and cats. The study provides the first continent-wide maps of migration stopover hotspots in the contiguous United States, and knowing these broadscale layover patterns can help in the development of conservation plans.  [...]

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New Scientist - Earth

Popocatépetl: Predicting Mexico's most dangerous volcano
Thu, 30 Nov 2023

Few volcanos come with more risk than Mexico's Popocatépetl, situated near Mexico City.  To mitigate danger, volcanologist Chiara Maria Petrone... Read more

Forget the Amazon – are these the most remarkable rivers in the world?
Thu, 16 Nov 2023

When most people are asked to name a river, they often reach for the Amazon or Nile, but these aren’t... Read more

Iceland volcano: Current cycle of eruptions could last for decades
Wed, 15 Nov 2023

Iceland is bracing for a volcanic eruption, as thousands of small earthquakes have shaken the southern part of the Reykjanes... Read more

Ice might be ubiquitous, but we are still discovering things about it
Wed, 15 Nov 2023

Once seen as miraculous, these days ice is no longer extraordinary. But in a winter season when Antarctic sea ice... Read more

Iceland volcano: 15km magma tunnel under town threatens to erupt
Tue, 14 Nov 2023

A 15-kilometre-long mass of lava has formed underneath the Reykjanes peninsula in Iceland and could erupt at any time... Read more

Stunning image of South America's largest lake hides a dark secret
Fri, 03 Nov 2023

Lake Maracaibo in Venezuela, the largest lake in South America, has been captured in detail by the European Space Agency's... Read more

Bits of an ancient planet called Theia may be buried in Earth’s mantle
Wed, 01 Nov 2023

Two strange, high-density blobs buried more than a kilometre underground may have come from the ancient world Theia, which is... Read more

Sun-blocking dust from asteroid impact drove the dinosaur extinction
Mon, 30 Oct 2023

The Chicxulub impact 66 million years ago filled the sky with fine silicate dust, which blocked out sunlight and lingered... Read more

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