As most of the countries are under lockdown right now, stay-at-home orders which include online grocery shopping has become the most convenient method to buy groceries. Also, many people are stocking up groceries and other essentials. But, what's the safest way

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Less than six months ago, Delhi was gasping for breath. Authorities said air quality had reached "unbearable levels". Schools were shut, flights were diverted, and people were asked to wear masks, avoid polluted areas and keep doors and windows closed.But during the lockdown that began on Mar 22, the concentration of poisonous PM2.5 particles in a cubic metre of air averaged at 44.18, according to a Reuters analysis of government data, indicating a rare "good" rating, the safest level on the scale.

The renewable sector holds the key to not only offsetting the job losses due to the pandemic, but also making the recovery sustainable

Several oils were examined for use in the cleaning and cryoprotection of crystals in the lipidic cubic phase in terms of their effect on the crystal stability, the background scattering and the facilitation of the experiment.

(A male golden-collared manakin cleans up his display area.) Few of us would find a marriage proposal made amidst dirty dishes and messy clutter particularly […]

The post Clean = Sexy for this Panamanian Bird appeared first on Smithsonian Insider.

A new report from the National Academies of Sciences, Engineering, and Medicine urges Congress, federal and state agencies, and regulatory institutions to significantly increase their support for innovation for what the report’s study committee calls “increasingly clean” electric power technologies – nuclear power, carbon capture and storage, and renewables such as solar and wind. Some of these technologies have seen recent cost and price declines and are cost-competitive in certain locations.

A new report from the National Academies of Sciences, Engineering, and Medicine recommends changes in the way that the U.S. Department of Energy manages science and technology (S&T) development in order to accelerate the cleanup of radioactive waste and contaminated soil, groundwater, and facilities at U.S. nuclear weapons sites.

Exide begins to remove lead-polluted soil on Monday morning at a house on the 1200 block of La Puerta Street in Boyle Heights.; Credit: Maya Sugarman/KPCC

All five members of the Los Angeles County Board of Supervisors have signed a letter imploring California Gov. Jerry Brown to intervene in the state’s handling of contamination around the Exide Technologies plant in Vernon.

The letter criticizing the state’s “piecemeal approach to an urgent environmental hazard” comes as workers paid for by Exide are removing lead-contaminated topsoil from two homes near the intersection of Olympic and Indiana avenues in L.A. 

Signed Tuesday, the letter asks for “guaranteed state funding to immediately begin testing” at 37 more homes also sampled, but to less specific degrees, during November 2013. In the words of the board, “further testing and remediation of the other 37 homes has not been confirmed and may not begin until at least October 2014 because Exide has not yet agreed to comply with DTSC directives issued last March.”

The supervisors also say the state has “reneged” on its commitments to test for lead inside the homes as well as outside.

The Department of Toxic Substances Control says that the two homes workers are at this week will be cleaned inside and out — even without indoor testing.  The DTSC’s Rizgar Ghazi said Monday that crews will use HEPA filters, vacuums and shampooing equipment on “basically any flat surface” inside the two residences.

Read the L.A. Board of Supervisors’ letter to Gov. Brown here:

http://www.scribd.com/doc/236655733/LA-County-Supervisors-Letter-to-Gov-Brown-8-12-14

This content is from Southern California Public Radio. View the original story at SCPR.org.

The engineered Dominguez Gap Wetlands in Long Beach filters stormwater and runoff from the Los Angeles River, then the water is siphoned under the river to a spreading ground to the west.; Credit: Sharon McNary/KPCC

Angelenos are used to looking up Heal the Bay's annual beach water quality report card each May as we search out the cleanest places to swim and surf.

Now, the environmental advocacy group is focusing on a new target — the often polluted water that flows into the ocean from the mountains and across the L.A. Basin.

In a first-ever report, it concludes the managers of 12 watersheds from Malibu to Long Beach are making too little progress toward cleaning up this major source of pollution in the Pacific.

This content is from Southern California Public Radio. View the original story at SCPR.org.

February satellite readings in the troposphere (the lower atmosphere) of nitrogen dioxide (NO2), a pollutant primarily from burning fossil fuels, show a dramatic decline compared to early January when power plants were operating at normal levels.; Credit: /NASA Earth Observatory

As China seeks to control the spread of COVID-19, fewer cars are driving, fewer factories are running and — in some places — skies are clearer.

Air pollution levels have dropped by roughly a quarter over the last month as coal-fired power plants and industrial facilities have ramped down so employees in high-risk areas can stay home. Levels of nitrogen dioxide, a pollutant primarily from burning fossil fuels, were down as much as 30%, according to NASA.

"It is an unprecedentedly dramatic drop in emissions," says Lauri Myllyvirta, lead analyst at the Centre for Research on Energy and Clean Air, who tallied the reductions. "I've definitely spoken to people in Shanghai who said that it's been some of the most pristine blue skies that they remember over the winter."

Myllyvirta estimates that China's carbon emissions have dropped by a quarter over the same period. While that's a tiny fraction of its overall annual emissions, it's substantial in a worldwide context, since China is the largest emitter of greenhouse gases.

There's potentially a health benefit — although any gains due to a drop in pollution are set against the toll taken by the coronavirus outbreak.

Air pollution is estimated to contribute to more than 1 million premature deaths in China each year. Fine particle pollution, also known as PM 2.5, can enter the bloodstream through the lungs and has been linked to asthma attacks, heart attacks and respiratory problems.

Even a short-term reduction in air pollution can make a difference.

"There is no question about it: When air quality improves, that will be associated with a reduction in health-related problems," says Jim Zhang, professor of global and environmental health at Duke University.

Zhang says that was evident during the 2008 summer Olympics in Beijing. To help improve the air, government officials shut factories and dramatically limited car travel before and during the games. Levels of some air pollutants dropped by half.

He and colleagues studied a group of young men and women in Beijing and found that during that time period, their lung and cardiovascular health improved. He also followed pregnant women.

"What we found is that the kids whose mothers had a third trimester pregnancy during the Olympics when the air quality was better, their birth weight was substantially higher than the kids who were born a year before and a year later," he says.

But health specialists sound a cautionary note.

"It would be a mischaracterization to say that the coronavirus was beneficial to health because of these air pollution reductions," says Jill Baumgartner, associate professor and epidemiologist at McGill University.

"The health impacts from the virus itself, the stress on the health-care system, the stress on people's lives — those health impacts are likely to be much greater than the short-term benefits of air pollution on health," she says.

Baumgartner says people with health issues other than COVID-19 may have avoided seeing doctors during the outbreak or potentially couldn't receive treatment they needed in areas with overtaxed health systems.

Those isolated at home and avoiding crowds may also have been exposed to more indoor air pollution.

"People spent a lot more time indoors and it's possible that they were exposed to higher levels of indoor tobacco smoke," Baumgartner says. "Or in the suburban areas, it's possible that they were using their traditional wood or coal stoves for heating."

Not all cities have experienced the recent improvements. In mid-February, Beijing saw a spike in pollution due to local weather patterns trapping air in the region.

The drop in air pollution and carbon emissions is also likely to disappear as Chinese industry ramps up again in an attempt to offset its economic losses.

"If you think back to the global financial crisis, the immediate impact was for China's emissions to fall," says Myllyvirta. "But then the government response was to roll out the biggest stimulus package in the history of mankind that then drove China's emissions and global emissions up for years."

This content is from Southern California Public Radio. View the original story at SCPR.org.

Homeless advocates erected a line of tents outside the Echo Park office of City Councilman Mitchell O'Farrell Feb. 12, 2020 to pressure him into meeting with them.; Credit:

Members of several groups of homeless advocates from across Los Angeles converged on a homeless encampment at the north end of   Echo Park Lake on Feb. 12 to protest the routine weekly litter collection.

A cleanup crew assisted by park rangers and city police officers did a once-through the campsite for miscellaneous trash, followed closely by a chanting and critical crowd of protesters.

The homeless advocates had erected extra tents that morning in protest of what they consider invasive cleanups. They also were trying to get City Councilman Mitchell O'Farrell to agree to meet with them as a group, same as he has met with other local organizations of homeowners and residents.

O'Farrell's spokesman Tony Aranga had insisted staffers were willing to meet with individuals to address their housing and other support needs.

This content is from Southern California Public Radio. View the original story at SCPR.org.

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AdwCleaner is a free program that searches for and deletes Adware, Toolbars, Potentially Unwanted Programs (PUP), and browser Hijackers from your computer. By using AdwCleaner you can easily remove many of these types of programs for a better user experience on your computer and while browsing the web. [...]

A new study provides recommendations to reduce the environmental impact of personal hygiene and cleaning products on the environment. Researchers undertook life-cycle assessments of products including detergents, soaps and toilet cleaners, and compared their environmental footprints looking at different types of environmental damage.

Excess nutrients in sea water can cause eutrophication, a major environmental concern. Shellfish species such as mussels can ‘soak up’ some of these nutrients. A recent Swedish study examines the cost-effectiveness of mussel farming in the Baltic Sea as a method of reducing nutrient concentration and compares its potential with other methods of combating eutrophication.

Aeration technologies designed to help landfill waste break down faster need to be refined in order to reduce pollution, greenhouse gas emissions and the long-term costs associated with landfill. This is according to a recent review of landfill aeration, which outlines some of the different systems currently available and highlights the need for better monitoring and sharing of data.

Scheduled cleanup

I did not bad mouth my predecessor. However, I never attempted to defend him or any of his actions. I fixed them!

Reducing the amount of phosphorus used in agriculture could go a long way in meeting the Baltic Sea Action Plan (BSAP) targets. A Swedish evaluation of measures for reducing agricultural phosphorus suggest phosphorus inputs to the sea could be cut by 180 tonnes per year, or about two-thirds of Sweden's target.

Applying a low voltage to polluted river sediment can boost microbes’ natural ability to degrade harmful polychlorinated biphenyl (PCB) contaminants, according to a new study. The approach could be a cost-effective, sustainable strategy to bioremediate polluted sites.

Shellfish harvesting areas in the UK are cleaner, thanks to sewerage improvement schemes over the last decade which have lowered average levels of Escherichia coli in oysters, mussels and other commercially-important species and boosted the shellfish industry’s economic value. Addressing the additional pollution risks from agriculture could further reduce contamination and human health risks.

Maritime ships, which transport around 90 percent of the world’s goods across the seas, generate about 3 percent of global carbon emissions.

A recent Bulgarian study has proposed a more environmentally friendly approach to manufacturing chemicals and biochemicals in multipurpose batch plants, which carefully considers how the production process is scheduled.

The recent oil spill in the Gulf of Mexico has highlighted the need to effectively evaluate possible response strategies. A new decision support tool can be used to consider the environmental, socio-economic and management effects of different responses to spills, translating them into monetary terms to provide a common currency for comparison.

Applying a low voltage to polluted river sediment can boost microbes’ natural ability to degrade harmful polychlorinated biphenyl (PCB) contaminants, according to a new study. The approach could be a cost-effective, sustainable strategy to bioremediate polluted sites.

A new study of clean-up workers seven years after the 2002 Prestige oil tanker spillage has found potential evidence for long-term impacts on their hormonal and immune systems as a result of exposure to the oil. The results suggest new health surveillance measures may be appropriate for workers involved in future oil clean-up operations.

Ash from waste incineration can be made safer simply by mixing it with rice husks, water and other forms of waste ash at temperatures under 100 °C, according to new research. Once dried, the end product not only locks away toxic metals lead and zinc, but also stores carbon. Furthermore, it can be used in the polymer industry to lower costs, improve polymer properties and reduce the use of natural resources.

Researchers have experimented with microwave heating as a way of cleaning soils polluted with fuels, such as diesel and petrol. Soil type and moisture levels, as well as the strength of microwaves used, had a strong bearing on the overall effectiveness of the cleaning. The research shows that, at certain depths and in certain types of soil, microwaves can be a cost-effective way of cleaning polluted soils.

New figures on how much titanium dioxide nanomaterial (TiO2-NM) could be released into the environment from photocatalytic cement — a new type of self-cleaning cement — are presented in a recent study. Based on experimental test results, the researchers estimate that between 0.015% and 0.033% of photocatalytic cement’s TiO2-NM content could potentially escape over several years of cement use, depending on the level of cement porosity. The study could help inform environmental risk assessment of TiO2-NM, as well as safer design of nano-products (i.e. commercialised products incorporating nanomaterials).

The presence of organic pollutants in waste water and drinking water can have alarming environmental and public health implications. Current water treatment methods have limitations: they can only remove certain contaminants, to certain extents, and also produce harmful by-products. New and improved methods are required. A recent review paper presents radiation processing as a promising approach, providing strong evidence of its efficacy, efficiency, safety, and feasibility. Focusing particularly on the use of electron-beam processing for the removal of organic pollutants from waste water and drinking water, the researchers present a compelling picture, relevant to stakeholders involved in water treatment and management.

A new study suggests that widespread adoption of hydrogen fuel could have major benefits for tackling climate change and air pollution. The researchers modelled the impacts of replacing petrol with hydrogen as a fuel for cars and claim their methods, which employ a new modelling tool, could be useful in planning and policymaking.

Despite some criticisms about the Clean Development Mechanism (CDM), a new study has indicated that CDM projects in China could be making sizeable improvements to air quality. The research predicted, in particular, that the projects' associated SO2 reductions would make up 13-14 per cent of the reductions in 2010 towards the national target level.

Implementation of technology to clean the flue gases of coal-fired power plants has significantly reduced sulphur and fine particle emissions that cause environmental damage. However, recent research suggests that plants applying this technology would emit more ultrafine particles (1-10 nanometer (nm) diameter) that affect the formation of clouds, with the unintended consequence of changing the amount and intensity of rainfall downwind of fossil fuel power installations.

Researchers have presented an extensive analysis of the role of nanomaterials in environmental remediation and monitoring. Nanomaterials can be used to clean up toxins and bacteria from natural waters, wastewaters and the air.

Integrating climate change policies with pollution control and energy security measures can deliver improved air quality, better public health and diversified energy supplies, and at a lower total energy cost than many previous studies have indicated, according to recent research.

What is the value of clean air? Answering such a question may be achieved by asking citizens how much they are willing to pay. However, some individuals give 'protest vote' responses to such questions. Recent research in EU countries found that the main reasons for this were because they felt that the polluters themselves or the government should be responsible for such costs.