NOTICIAS RECIENTES SOBRE CALIDAD DEL AIRE

Air pollution impacts can be heart-stopping

There is an increased risk of out-of-hospital cardiac arrest even from short-term exposure to low concentrations of dangerously small particulate matter PM2.5, an international study has found, noting an association with gaseous pollutants such as those from coal burning, wildfires/bushfires and motor vehicles. The authors call for a tightening of standards worldwide; the findings also point to the need to transition to cleaner energy.

28.Ene.2020


Cutting road transport pollution could help plants grow

Cutting emissions of particular gases could improve conditions for plants, allowing them to grow faster and capture more carbon, new research suggests.

27.Ene.2020


Buildings can become a global CO2 sink if made out of wood instead of cement and steel

A material revolution replacing cement and steel in urban construction by wood can have double benefits for climate stabilization. First, it can avoid greenhouse gas emissions from cement and steel production. Second, it can turn buildings into a carbon sink as they store the CO2 taken up from the air by trees that are harvested and used as engineered timber.

27.Ene.2020


Lab turns trash into valuable graphene in a flash

Scientists are using high-energy pulses of electricity to turn any source of carbon into turbostratic graphene in an instant. The process promises environmental benefits by turning waste into valuable graphene that can then strengthen concrete and other composite materials.

27.Ene.2020


Children to bear the burden of negative health effects from climate change

The grim effects that climate change will have on pediatric health outcomes was the focus of a recent article.

27.Ene.2020


New portable tool analyzes microbes in the environment

Imagine a device that could swiftly analyze microbes in oceans and other aquatic environments, revealing the health of these organisms - too tiny to be seen by the naked eye - and their response to threats to their ecosystems. Researchers have created just such a tool, a portable device that could be used to assess microbes, screen for antibiotic-resistant bacteria and analyze algae that live in coral reefs.

27.Ene.2020


High air pollution exposure in 1-year-olds linked to structural brain changes at age 12

A new study suggests that significant early childhood exposure to traffic-related air pollution (TRAP) is associated with structural changes in the brain at the age of 12.

24.Ene.2020


Assessing risk of chemicals to wildlife is huge challenge that requires new approach

Computer modelling and long-term ecological monitoring will be essential to assess the environmental risks of the rapidly growing number of chemicals across the world, according to a new review paper.

24.Ene.2020


Living near major roads linked to risk of dementia, Parkinson's, Alzheimer's and MS

Living near major roads or highways is linked to higher incidence of dementia, Parkinson's disease, Alzheimer's disease and multiple sclerosis (MS), suggests new research.

23.Ene.2020


2018's Four Corners drought directly linked to human-caused climate change

The western United States has experienced such intense droughts over the past decade that technical descriptions are becoming inadequate. In many places, conditions are rocketing past "severe," through "extreme," all the way to "exceptional drought."

23.Ene.2020


Mapping the cumulative health effects of environmental exposures

The genomics revolution has provided powerful insights into genetic risk factors for human disease while also revealing the limits of genetic determinants, which account for only a fraction of total disease risk. A new article argues that a similar large-scale effort is needed to ensure a more complete picture of disease risk by accounting for the exposome, defined as our cumulative exposure to environmental agents such as chemical pollutants.

23.Ene.2020


Chemicals in the environment: A focus on mixtures

The real world is marked by multiple stressors, among them cocktails of chemicals. The review article presents methodological approaches to isolating, characterizing and tracking chemicals of concern in complex mixtures. Techniques that combine chemical analysis and bioassays are most suited to this purpose.

23.Ene.2020


Exposure to diesel exhaust particles linked to pneumococcal disease susceptibility

A new study shows that exposure to diesel exhaust particles (DEPs) can increase an individual's susceptibility to pneumococcal disease.

23.Ene.2020


Despite less ozone pollution, not all plants benefit

Policies and new technologies have reduced emissions of precursor gases that lead to ozone air pollution, but despite those improvements, the amount of ozone that plants are taking in has not followed the same trend, according to researchers.

22.Ene.2020


Deep diving scientists discover bubbling CO2 hotspot

Hydrologists diving off the coast of the Philippines have discovered volcanic seeps with some of the highest natural levels of C02 ever recorded. The scientists were working in Verde Island Passage, one of the most diverse marine ecosystems in the world and is home to thriving coral reefs.

22.Ene.2020


Air pollution in New York City linked to wildfires hundreds of miles away

A new study shows that air pollutants from the smoke of fires from as far as Canada and the southeastern US traveled hundreds of miles and several days to reach Connecticut and New York City, where it caused significant increases in pollution concentrations.

22.Ene.2020


Missing piece to urban air quality puzzle

Air quality models have long failed to accurately predict atmospheric levels of secondary organic aerosol, which comprises a substantial fraction of the fine particulate matter in cities. But researchers have found a missing source of emissions that may explain roughly half of that SOA, closing much of the model-measurement gap.

22.Ene.2020


Persistent environmental contaminant changes the gut microbiome of mice

An industrial chemical -- phased out since 2002, but previously used in stain and water-repellent products and firefighting foam -- alters the gut microbiome of mice and could have implications for human health, according to an international team of researchers.

22.Ene.2020


Mortality costs of air pollution in US

Scholars have studied the effects of acute fine particulate matter exposure on mortality, health care use and medical costs among older Americans through Medicare data and changes in local wind direction.

22.Ene.2020


Emissions of potent greenhouse gas have grown, contradicting reports of huge reductions

Despite reports that global emissions of the potent greenhouse gas were almost eliminated in 2017, an international team of scientists has found atmospheric levels growing at record values.

21.Ene.2020


Tracking the scent of warming tundra

Climate change is causing the subarctic tundra to warm twice as fast as the global average, and this warming is speeding up the activity of the plant life. Researchers have now elucidated how this warming affects the tundra ecosystem and the origin of an increased amount of volatile compounds released from the tundra.

21.Ene.2020


Life aquatic for many spider species

Researchers have found that nearly one fifth of all spider families are associated with saltwater or freshwater aquatic habitats. Their findings address the common misconception that all spiders dwell on land, and reveal surprising evolutionary pathways of this group from a land-based existence back to a water-based existence.

21.Ene.2020


Addressing global warming with new nanoparticles and sunshine

Harvesting sunlight, IBS scientists reported a new strategy to transform carbon dioxide (CO2) into oxygen (O2) and pure carbon monoxide (CO) without side-products in water. This artificial photosynthesis method could bring new solutions to environmental pollution and global warming.

21.Ene.2020


Brazilian wildfire pollution worsens air quality in distant cities

Wildfires in south eastern Brazil produce airborne pollution that worsens air quality in major cities such as Sao Paulo -- cancelling out efforts to improve the urban environment and posing health risks to citizens, according to a new study.

21.Ene.2020


Setting controlled fires to avoid wildfires

Despite having proven effective at reducing wildfire risks, prescribed burns have been stymied by perceived and real risks, regulations and resource shortages. A new analysis highlights ways of overcoming those barriers, offering solutions for wildfire-ravaged landscapes.

20.Ene.2020


Mix of stress and air pollution may lead to cognitive difficulties in children

Children with elevated exposure to early life stress in the home and elevated prenatal exposure to air pollution exhibited heightened symptoms of attention and thought problems, according to researchers. Early life stress is common in youth from disadvantaged backgrounds who also often live in areas with greater exposure to air pollution.

16.Ene.2020


How anti-sprawl policies may be harming water quality

Urban growth boundaries are created by governments in an effort to concentrate urban development -- buildings, roads and the utilities that support them -- within a defined area. These boundaries are intended to decrease negative impacts on people and the environment. However, according to a researcher, policies that aim to reduce urban sprawl may be increasing water pollution.

16.Ene.2020


The carbon footprint of dinner: How 'green' are fish sticks?

Fish sticks may be a tasty option for dinner, but are they good for the planet? A new study of the climate impacts of seafood products reveals that the processing of Alaskan pollock into fish sticks, imitation crab, and fish fillets generates significant greenhouse gas emissions.

16.Ene.2020


A wearable gas sensor for health and environmental monitoring

A highly sensitive, wearable gas sensor for environmental and human health monitoring may soon become commercially available.

16.Ene.2020


Air pollution from oil and gas production sites visible from space

US and European satellites help scientists measure nitrogen dioxide from drilling, production and flaring.

15.Ene.2020


Building materials come alive with help from bacteria

New living building materials can grow and multiply -- and may help to reduce the greenhouse gas emissions from infrastructure in the future.

15.Ene.2020


Nitrogen-fixing genes could help grow more food using fewer resources

Scientists have transferred a collection of genes into plant-colonizing bacteria that let them draw nitrogen from the air and turn it into ammonia, a natural fertilizer. The work could help farmers around the world use less human-made fertilizers to grow important food crops like wheat, corn, and soybeans.

15.Ene.2020


Are sinking soils in the Everglades related to climate change?

Characterized by alligators, airboats and catfish, the Everglades is a region of swampy wetlands in southern Florida. In addition to the area's role in Florida's tourism industry, the Everglades play a significant part in protecting our environment - through carbon sequestration.

15.Ene.2020


Robotic gripping mechanism mimics how sea anemones catch prey

Researchers demonstrated a robotic gripping mechanism that mimics how a sea anemone catches its prey. The bionic torus captures and releases objects by crimping its skin. The grasper not only is relatively cheap and easy to produce but also can grab a variety of objects of different sizes, shapes, weights and materials.

14.Ene.2020


School indoor air quality cannot be reliably assessed based on pupils' symptoms

The association between indoor air quality of the school building and the pupils' symptoms was so weak that it is not possible to reliably assess the quality of the indoor air based on the amount of reported symptoms.

14.Ene.2020


Iodine may slow ozone layer recovery

Air pollution and iodine from the ocean contribute to damage of Earth's ozone layer.

13.Ene.2020


Future subtropical warming accelerates tropical climate change

In response to future fossil fuel burning, climate computer models simulate a pronounced warming in the tropical oceans. This warming can influence the El Niño phenomenon and shift weather and rainfall patterns across the globe. Despite being robustly simulated in computer models of the climate system, the origin of this accelerated tropical warming has remained a mystery. A new study concludes that climate change outside the tropics is the main culprit.

13.Ene.2020


Low-temp photocatalyst could slash the carbon footprint for syngas

Engineers have created a light-powered nanoparticle that could shrink the carbon footprint of syngas producers.

10.Ene.2020


SuperTIGER on its second prowl -- 130,000 feet above Antarctica

A balloon-borne scientific instrument designed to study the origin of cosmic rays is taking its second turn high above the continent of Antarctica three and a half weeks after its launch.

10.Ene.2020


Global warming is the kindling that caused extensive wildfire

Researchers identified Arctic Oscillation as the cause for the recent wildfires in Siberia. Their study forecasts wildfire activity in spring, helping to prevent carbon release and global warming.

10.Ene.2020


Cracks in Arctic sea ice turn low clouds on and off

The prevailing view has been that more leads are associated with more low-level clouds during winter. But an atmospheric scientists noticed something strange in their study of these leads: when lead occurrence was greater, there were fewer, not more clouds.

10.Ene.2020


How do corals make the most of their symbiotic algae?

Corals depend on their symbiotic relationships with the algae that they host. But how do they keep algal population growth in check? The answer to this fundamental question could help reefs survive in a changing climate. New work indicates how sea anemones, which are closely related to coral, control the size of the algal populations that reside within their tissue.

08.Ene.2020


Evolving landscape added fuel to Gobi Desert's high-speed winds

A new study finds that the dark, rocky landscape of the Hami basin in the Gobi Desert helped to make it one of the windiest places in China.

08.Ene.2020


Sea-ice-free Arctic makes permafrost vulnerable to thawing

New research provides evidence from Siberian caves suggesting that summer sea ice in the Arctic Ocean plays an essential role in stabilizing permafrost and its large store of carbon.

08.Ene.2020


Debunking previous studies that say tropical fish are behaving oddly

Biologists help debunk previous studies that say tropical fish are behaving oddly as oceans gets more acidic due to climate change.

08.Ene.2020


Air pollution in childhood linked to schizophrenia

Children who grow up in areas with heavy air pollution have a higher risk of developing schizophrenia.

07.Ene.2020


Poplar genetically modified not to harm air quality grow as well as non-modified trees

Field trials in Oregon and Arizona show that poplar trees, which emit trace amounts of the gas isoprene, can be genetically modified not to harm air quality while leaving their growth potential unchanged.

06.Ene.2020


Shutdown of coal-fired plants in US saves lives and improves crop yields

The decommissioning of coal-fired power plants in the continental United States has reduced nearby pollution and its negative impacts on human health and crop yields, according to a new study.

06.Ene.2020


Air pollution can worsen bone health

A new study with over 3,700 people in India associates air pollution with a higher risk to develop osteoporosis.

03.Ene.2020


Life could have emerged from lakes with high phosphorus

Life as we know it requires phosphorus, and lots of it. But phosphorus is scarce. A new study reports that certain types of carbonate-rich lakes, which could have formed on early Earth, have the right chemistry to keep phosphorous levels high and available to organisms.

30.Dic.2019