Day: January 6, 2023

The Biden administration is proposing tougher standards for a deadly air pollutant, saying that reducing soot from tailpipes, smokestacks and wildfires could prevent thousands of premature deaths a year. 

A proposal released Friday by the Environmental Protection Agency would set maximum levels of 9 to 10 micrograms of fine particle pollution per cubic meter of air, down from 12 micrograms set a decade ago under the Obama administration. The standard for particle pollution, more commonly known as soot, was left unchanged by former President Donald Trump, who overrode a scientific recommendation for a lower standard in his final days in office. 

Environmental and public health groups that have been pushing for a stronger standard were disappointed, saying the EPA proposal does not go far enough to limit emissions of what is broadly called “fine particulate matter,” the tiny bits of soot we breathe in unseen from tailpipes, wildfires, factory and power plant smokestacks, and other sources. 

In a development that could lead to an even lower standard, the EPA said Friday that it also would take comments on a range of ideas submitted by a scientific advisory committee, including a proposal that would lower the maximum standard for soot to 8 micrograms. A microgram is one-millionth of a gram. 

EPA Administrator Michael Regan said the proposal to strengthen the national ambient air quality standards for fine particle pollution would help prevent serious health problems, including asthma attacks, heart attacks and premature death that disproportionately affect vulnerable populations. Those populations include children, older adults and those with heart and lung conditions, as well as low-income and minority communities throughout the United States. 

“This administration is committed to working to ensure that all people, regardless of the color of their skin, the community they live in or the money in their pocket, have clean air to breathe, clean water to drink and the opportunity to lead a healthy life,” Regan said at a news conference. “At EPA, we are working every single day to create cleaner and healthier communities for all and have been doing so for over 50 years.” 

‘A disappointment’

Harold Wimmer, the president of the American Lung Association, called the EPA’s proposal disappointing, saying it was “inadequate to protect public health from this deadly pollutant.” 

“Current science shows that stronger limits are urgently needed … to protect vulnerable populations,” Wimmer said, calling for the EPA to lower the standard to 8 micrograms or lower. 

Seth Johnson, an attorney for the environmental group Earthjustice, called the EPA plan “a disappointment and missed opportunity overall.” While it would strengthen some public health protections, “EPA is not living up to the ambitions of this administration to follow the science, protect public health and advance environmental justice,” Johnson said. He urged the EPA “to hear communities, not industrial polluters, and strengthen this rule. Overburdened communities have the right to breathe clean air.” 

The U.S. Chamber of Commerce and other business groups called for the current standards to be maintained. 

“The United States has some of the best air quality in the world, thanks to steady reductions in contributors to particulate matter emissions over the last decade,” said Chad Whiteman, vice president of environment and regulatory affairs at the chamber’s Global Energy Institute. 

The proposed rule could “stifle manufacturing and industrial investment and exacerbate permitting challenges that continue to hamper the economy,” Whiteman said. 

‘Regulatory burden’

Mike Ireland, president of the Portland Cement Association, which represents U.S. cement manufacturers, added that the EPA’s proposed action “is yet another regulatory burden that will hamper the cement industry’s ability to manufacture sustainable construction materials to meet the nation’s infrastructure needs.” 

EPA scientists have estimated exposure at current limits causes the early deaths of thousands of Americans annually from heart disease and lung cancer as well as causing other health problems. 

Dr. Doris Browne, president of the National Medical Association, the oldest and largest national organization representing African American physicians, hailed the plan as “the bold action needed to protect public health across the country.” 

Appearing with Regan at a news conference, Browne said the proposal is likely to have lasting benefits across the country “but especially for those communities of color and low-income communities that experience the increase in particulate matter pollution.” Smog, soot and other pollution near factories, power plants and other hazards has a “devastating impact on public health,” she said. 

The EPA proposal would require states, counties and tribal governments to meet a stricter air quality standard for fine particulate matter up to 2.5 microns in diameter — far smaller than the diameter of a human hair. A micron, also called a micrometer, is equal to one-millionth of a meter. 

The standard would not force polluters to shut down, but the EPA and state regulators could use it as the basis for other rules that target pollution from specific sources such as diesel-fueled trucks, refineries and power plants. 

A 2022 report by the American Lung Association found that 63 million Americans live in counties that experience unhealthy daily spikes in soot pollution and 21 million live in counties that exceed annual limits for soot pollution. Most of those counties were in 11 Western states, the report said. People of color were 61% more likely than white people to live in a county with unhealthy air quality, the report said. 

Fresno, California, displaced Fairbanks, Alaska, as the metropolitan area with the worst short-term particle pollution, the report found, while Bakersfield, California, continued in the most-polluted slot for year-round particle pollution for the third year in a row. 

As of December 31, five metropolitan areas were not in compliance with current standards, the EPA said. Four of those areas are in California, including the San Joaquin Valley and Los Angeles. Allegheny County, Pennsylvania, which includes Pittsburgh, also is out of compliance. 

The EPA will accept comments on the proposed rule through mid-March and will hold a virtual public hearing over several days. A final rule is expected this summer.
…

Major tech companies are appealing to consumers’ evolving lifestyles, tastes and personal values with connected devices that touch on nearly every aspect of daily life. From the CES 2023 consumer technology show in Las Vegas, VOA’s Tina Trinh has the story. Video editor: Matt Dibble
…

India has announced a $2.3 billion plan to promote “green hydrogen” — hydrogen produced with renewable energy — which experts say could be the clean fuel of the future.

The initiative could help the world’s third-largest emitter of greenhouse gases reach its goal of net zero carbon emissions by 2070. 

A series of incentives are aimed at making green hydrogen affordable by bringing down production costs of a technology that has yet to become commercially viable.  

While India has been rapidly expanding renewables such as solar energy, these will not be enough to meet climate goals in a country whose energy needs are expected to grow more than anywhere in the world over the next two decades. India’s current reliance on carbon-emitting coal, its primary source of electricity, has raised concerns on how it will switch to clean energy.

The government is hoping that investments under what is called the National Hydrogen Mission, will provide the answer.

“For lot of heavy industries like steel, cement and oil refining, green hydrogen can be a better solution to make them cleaner. Their massive energy requirements cannot be met by other renewable sources such as solar and wind,” Vibhuti Garg, South Asia director at the Institute for Energy Economics and Financial Analysis, said.

 “But much will depend on the cost economics” he said. 

Green hydrogen is made by using electricity from renewable sources to split hydrogen from water. The energy it produces creates no carbon emissions. But in an industry still in its infancy, the key lies in significantly lowering production costs. 

“The goal is to bring down its cost over the next five years,” Information and Broadcasting Minister Anurag Thakur said this week while announcing the initiative. He said it will also help India reduce its emissions and become a major exporter in the field.   

Some experts are optimistic. “In the last one year there has been a drop in green hydrogen prices from roughly $4 per kilogram to $3 now,” said Hemant Mallya at the Council for Energy, Environment and Water, a public policy think tank in New Delhi.

He said increased use will bring down costs further. “The eventual target is $1 per kilogram because that is when you start becoming competitive with coal. But even before that if we can hit $2 per kilogram, it will compete with gas currently imported from Russia and that is pretty much achievable with scale and technological advancement.”

The hope is that just as costs for solar power have dropped substantially in recent years and are now lower than that of electricity generated by coal plants, the cost of producing green hydrogen will also reduce over time. 

India’s goal is to produce 5 million tons of green hydrogen per year by 2030. Experts call it an “ambitious” target and point out that at the moment India only has a handful of pilot projects in the sector. 

However, India wants to ensure that it is not left behind in a technology that is now being looked at with much more hope as the world grapples with a climate crisis. In giving a push to green hydrogen, India is following other countries like the United States and those in the European Union that have also approved incentives worth billions of dollars for its development. 

“I think India does not want to miss the bus and is putting the building blocks in place,” said Garg. She pointed out that in the solar energy sector for example, China took the lead in manufacturing the most cost-competitive components for solar panels, leaving most countries, including India, dependent on Chinese imports. “In green hydrogen, India wants to be a pioneer and not wait for other countries to become the lead players.” 

As the government offers financial incentives, some of India’s biggest firms have made commitments to invest in green hydrogen. They include conglomerates like the Adani Group and Reliance Industries and state-owned energy companies.  

Still, experts say there are many challenges ahead in developing the nascent industry. India will have to scale up domestic manufacturing of electrolyzers, which are a key component to develop green hydrogen and also ensure that there is enough renewable energy available to make it. The investments needed will be huge. Domestic industries might have to be incentivized to switch to using green hydrogen.  

India is also eyeing exports of green hydrogen by becoming a cost-competitive source.

“Our aim is to establish India as a global hub of green hydrogen,” Thakur said. “We will make efforts to get at least 10% of the global demand for green hydrogen.” 

Hopes that export markets will emerge if green hydrogen becomes viable have risen after the disruption in global energy markets in the wake of Russia’s invasion of Ukraine. “We need to broaden the horizon and look at exports because the premium on the price of green hydrogen might be a problem domestically, but internationally it is not that much of a challenge for someone in Europe to pay it. And because of the Ukraine crisis for example, countries in Europe, will want to transition quicker than anticipated from natural gas,” according to Mallya.  

 
…

The world’s glaciers are shrinking and disappearing faster than scientists thought, with two-thirds of them projected to melt out of existence by the end of the century at current climate change trends, according to a new study.

But if the world can limit future warming to just a few more tenths of a degree and fulfill international goals — technically possible but unlikely according to many scientists — then slightly less than half the globe’s glaciers will disappear, said the same study. Mostly small but well-known glaciers are marching to extinction, study authors said.

In an also unlikely worst-case scenario of several degrees of warming, 83% of the world’s glaciers would likely disappear by the year 2100, study authors said.

Thursday’s study in the journal Science examined all of the globe’s 215,000 land-based glaciers — not counting those on ice sheets in Greenland and Antarctica — in a more comprehensive way than past studies. Scientists then used computer simulations to calculate, using different levels of warming, how many glaciers would disappear, how many trillions of tons of ice would melt, and how much it would contribute to sea level rise.

The world is now on track for a 2.7-degree Celsius (4.9 degrees Fahrenheit) temperature rise since pre-industrial times, which by the year 2100 means losing 32% of the world’s glacier mass, or 48.5 trillion metric tons of ice as well as 68% of the glaciers disappearing. That would increase sea level rise by 115 millimeters (4.5 inches) in addition to seas already getting larger from melting ice sheets and warmer water, said study lead author David Rounce.

“No matter what, we’re going to lose a lot of the glaciers,” Rounce, a glaciologist and engineering professor at Carnegie Mellon University, said. “But we have the ability to make a difference by limiting how many glaciers we lose.”

“For many small glaciers it is too late,” said study co-author Regine Hock, a glaciologist at the University of Alaska Fairbanks and the University of Oslo in Norway. “However, globally our results clearly show that every degree of global temperature matters to keep as much ice as possible locked up in the glaciers.”

Projected ice loss by 2100 ranges from 38.7 trillion metric tons to 64.4 trillion tons, depending on how much the globe warms and how much coal, oil and gas is burned, according to the study.

The study calculates that all that melting ice will add anywhere from 90 millimeters (3.5 inches) in the best case to 166 millimeters (6.5 inches) in the worst case to the world’s sea level, 4% to 14% more than previous projections.

That average sea level rise from glaciers would mean more than 10 million people around the world — and more than 100,000 people in the United States — would be living below the high tide line, who otherwise would be above it, said sea level rise researcher Ben Strauss, CEO of Climate Central. Twentieth-century sea level rise from climate change added about 100 millimeters to the surge from 2012 Superstorm Sandy, costing about $8 billion in damage just in itself, he said.

Scientists say future sea level rise will be driven more by melting ice sheets than glaciers.

But the loss of glaciers is about more than rising seas. It means shrinking water supplies for a big chunk of the world’s population, more risk from flood events from melting glaciers and losing historic ice-covered spots from Alaska to the Alps to even near Mount Everest’s base camp, several scientists told The Associated Press.

“For places like the Alps or Iceland … glaciers are part of what makes these landscapes so special,” said National Snow and Ice Data Center Director Mark Serreze, who wasn’t part of the study but praised it. “As they lose their ice in a sense they also lose their soul.”

Hock pointed to Vernagtferner glacier in the Austrian Alps, which is one of the best-studied glaciers in the world, and said “the glacier will be gone.”

The Columbia Glacier in Alaska had 216 billion tons of ice in 2015, but with just a few more tenths of a degree of warming, Rounce calculated it will be half that size. If there’s 4 degrees Celsius (7.2 degrees Fahrenheit) of warming since pre-industrial times, an unlikely worst-case scenario, it will lose two-thirds of its mass, he said.

“It’s definitely a hard one to look at and not drop your jaw at,” Rounce said.

Glaciers are crucial to people’s lives in much of the world, said National Snow and Ice Center Deputy Lead Scientist Twila Moon, who wasn’t part of the study.

“Glaciers provide drinking water, agricultural water, hydropower, and other services that support billions (yes, billions!) of people,” Moon said in an email.

Moon said the study “represents significant advances in projecting how the world’s glaciers may change over the next 80 years due to human-created climate change.”

That’s because the study includes factors in glacier changes that previous studies didn’t and is more detailed, said Ruth Mottram and Martin Stendel, climate scientists at the Danish Meteorological Institute who weren’t part of the research.

This new study better factors in how the glaciers’ ice melts not just from warmer air, but also from water both below and at the edges of glaciers and how debris can slow melt, Stendel and Mottram said. Previous studies concentrated on large glaciers and made regional estimates instead of calculations for each individual glacier.

In most cases, the estimated loss figures Rounce’s team came up with are slightly more dire than earlier estimates.

If the world can somehow limit warming to the global goal of 1.5 degrees Celsius (2.7 degrees Fahrenheit) of warming since pre-industrial times — the world is already at 1.1 degrees (2 degrees Fahrenheit) — Earth will likely lose 26% of total glacial mass by the end of the century, which is 38.7 trillion metric tons of ice melting. Previous best estimates had that level of warming melting translating to only 18% of total mass loss.

“I have worked on glaciers in the Alps and Norway which are really rapidly disappearing,” Mottram said in an email. “It’s kind of devastating to see.”
…