The air we breathe was getting better. Then climate change hit.

“For the first 40-something years of the Clean Air Act of 1963, the Environmental Protection Agency could show progress toward cleaner air — even if it was sometimes slow or uneven. The agency issued regulations for sources of the pollutants it was set up to tackle, like diesel car tailpipes and coal power plants, and over time, the air quality improved.
But the trend changed abruptly about five years ago, when pollution from wildfires, heat, and drought — trends worsened by climate change — began to overtake these gains.”

“Ozone and fine particulate matter affect the entire body in all stages of life. They impact the young and old, pregnant people and the developing fetus, and can cause and worsen respiratory disease, cardiovascular disease, and worse cognition. Their sources can be a bit different, though. Burning oil, gas, and coal, whether at the tailpipe or power plant, releases pollutants that cause both ozone and particulate matter. Ozone also is more likely to form in hot weather, while wildfires tend to be much worse for particulate matter.”

Biden rule tells power plants to cut climate pollution by 90 percent — or shut down

“The Biden administration is announcing a climate rule that would require most fossil fuel power plants to slash their greenhouse gas pollution 90 percent between 2035 and 2040 — or shut down.”

How to clear the air in the most polluted cities on Earth

“While the 2008 Games were marked by some of the worst air quality in Olympic history, China’s “war against pollution” has advanced so much since that Olympians this month could glimpse the previously smog-enshrouded mountains surrounding the city. Air pollution in the capital has decreased by 50 percent since the 2008 Olympics, which if maintained will lead to four years of additional life for the average Beijing resident.”

“Thousands of miles away in Delhi, air pollution has remained at pervasively high levels for the past few months. The Indian capital’s winter air pollution spike is coming to an end, but the annual cycle — driven by cooler air, cooking and heating fires, seasonal agricultural burning, and the Diwali festival — will persist without further action.
Winter in Delhi is accompanied by a pervasive smell of toxic smoke, by coughing and nausea indoors and outdoors, and by increased hospitalizations for respiratory and cardiac-related illnesses. This past November, Delhi even instituted a partial lockdown for non-Covid reasons, shutting down schools and construction for several days and imposing a work-from-home order for government employees in an effort to reduce air pollution. Throughout the winter into January, Delhi’s Chief Minister Arvind Kejriwal tweeted the city’s bad air pollution levels every day, raising awareness about the issue.

Air pollution in Delhi comes from nearly every source possible: power plants, vehicle emissions, construction dust, agriculture, and the burning of coal for home cooking and heating. All of these activities create particulate matter — minuscule air pollution particles that contribute to cancer, lung and cardiovascular disease, and even cognitive decline.”

“Millions of deaths per year are attributed to air pollution, and it reduces average global life expectancy by 2.2 years. Air pollution is one of the most pressing public health problems in the world, and one of the most neglected, as Vox’s Dylan Matthews has written. Before the Covid-19 pandemic, poverty, malaria, pneumonia, and diarrheal disease deaths were on the decline, along with maternal and child mortality rates; air pollution, on the other hand, was getting worse in many places.”

“For decades, public health officials have known that bad air quality can increase the risk of conditions like heart disease, stroke, lower respiratory infections, lung cancer, diabetes, chronic obstructive pulmonary disease (COPD), dementia, mental illness, premature births, and more. But the true extent of the problem — such as the fact that air pollution can be worse for health than heavy smoking, for example — is only now becoming clear, as is the full extent of the threat.”

“Since the fuel sources that produce air pollution also provide necessities such as electricity, vehicles, factory-made goods, and heating, policymakers face tough decisions on how to deal with air pollution-related health concerns while not eroding well-being in other ways.”

How humans could live two years longer

“A recent study on the mortality cost of climate change found that every 4,434 metric tons of carbon dioxide emitted — about the combined lifetime emissions of 3.5 Americans, the study estimates — will cause a heat-related death this century.

But the situation is even worse than that number suggests. Danny Bressler, the environmental economist who authored the paper, notes his estimate leaves out some other potential climate-related deaths, like those from flooding and reduced food supply. He’s just estimating what higher temperatures alone will do, writing that he “does not consider likely mortality co-benefits of stricter climate policies, such as decreases in particulate matter pollution.”

That’s a technical way of putting it. Here’s a simpler way: When we burn fossil fuels, not all the resulting pollution goes up high into the atmosphere. Some of it accumulates in the air that we breathe every day.

And it kills us. A lot of us. The Global Burden of Disease study, a common benchmark for public health work, estimates that 3.4 million people die prematurely every year due to air pollution. More recent research puts the total even higher, at 10 million a year. A recent paper suggested that 90 percent of the world’s population lives in areas with air pollution higher than World Health Organization guidelines (guidelines that the organization itself is toughening).

The particles in question here are invisible to the naked eye — but their effects are anything but.”

How humans could live two years longer

“When we burn fossil fuels, not all the resulting pollution goes up high into the atmosphere. Some of it accumulates in the air that we breathe every day.

And it kills us. A lot of us. The Global Burden of Disease study, a common benchmark for public health work, estimates that 3.4 million people die prematurely every year due to air pollution. More recent research puts the total even higher, at 10 million a year. A recent paper suggested that 90 percent of the world’s population lives in areas with air pollution higher than World Health Organization guidelines (guidelines that the organization itself is toughening).

The particles in question here are invisible to the naked eye — but their effects are anything but.”

“Air pollution is a tough problem, but the good news is that we can help solve it by solving another tough problem. Actions to combat global warming can also dramatically cut air pollution deaths.”

The US is inching closer to passing a game-changing climate policy

“A time when the United States runs mostly on wind- and solar-powered electricity could be a reality in only a few years. It wouldn’t require any scientific breakthroughs or technological leaps for clean energy to overtake coal and natural gas, which still dominate 60 percent of the US power sector. What it would take to challenge a century of fossil-fuel dominance in record-breaking time is one sweeping, underappreciated policy: a clean electricity standard.”

“A clean electricity standard is a bit of a misnomer because the actual policy being discussed is even more boring-sounding: a clean electricity payment program that pays utilities to clean up their act and fine them for missing deadlines. Still, this approach could effectively double the amount of wind and solar on the market, moving the nation toward roughly 80 percent renewable sources of electricity by 2030, and within reach of 100 percent clean electricity by 2035. It’s critical to getting the US halfway to Biden’s pledge under the Paris climate agreement.”

“Two of the biggest ways Americans contribute to climate change is in their transportation and electricity usage. You might cut your carbon footprint by making your home more efficient, installing a solar panel, and even buying an electric car — and the power that flows from your outlet is a lot cleaner than it was a decade ago. But coal and natural gas, more often than not, are still the status quo. This reality limits the impact of well-meaning actions: A coal-fired power plant may be charging your Tesla, and gas might be powering your office’s air conditioning.”

“The biggest short-term benefits aren’t even about climate change. Continuing to cut coal also slashes the country’s air pollution, like the ozone and particulates that damage people’s lungs and hearts. These gains would easily dwarf what the Environmental Protection Agency has accomplished under previous presidents because it would close more coal-powered plants than even President Barack Obama’s most effective environmental regulation, the mercury and air toxins rule.
And then there are the lives saved, according to research from Harvard University: By 2030, the policy would save 9,200 lives because of the sudden cut in air pollution. Over the next 30 years, that number grows to 317,500 lives saved.”

Air pollution is much worse than we thought

“even as attention has shifted to climate change, the air pollution case has grown stronger and stronger, as the science on air pollution has advanced by leaps and bounds. Researchers are now much more able to pinpoint air pollution’s direct and indirect effects, and the news has been uniformly bad.”

“the effects of air pollution are roughly twice as bad as previously estimated.”

“Right now, air pollution leads to almost 250,000 premature deaths a year in the US. Within a decade, aggressive decarbonization could reduce that toll by 40 percent; over 20 years, it could save around 1.4 million American lives that would otherwise be lost to air quality.”

“With giant data sets, “you can control for socioeconomic status, temperature, hypertension and other existing conditions,” and other variables, says Shindell. “You can convincingly demonstrate that correlation is in fact causal, because you can rule out essentially every other possibility.””

““The well-understood pathways, things like strokes, lower respiratory infections, and chronic obstructive pulmonary disease, only seem to capture about half the total,” Shindell says. “When you look at the [new] studies, you find that air pollution seems to affect almost every organ in the human body.””

“It is no coincidence that Trump’s Environmental Protection Agency is trying to exclude consideration of co-benefits (often the largest class of benefits) in its air quality rulemakings. It’s no coincidence that it is trying to exclude consideration of studies with anonymous participants, a category that encompasses all the latest research Shindell and others draw on. The fossil fuel lobby, which now includes the entire executive branch, has long understood that the science isn’t going its way. These rule changes are its last-ditch bid to blind the government to new research.”

“It is true that climate change can only be averted with the entire world’s cooperation; if the US reduces its emissions to net zero but the other countries of the world (especially China and India) continue on their current trajectory, it will make almost no difference in temperature. The health benefits of avoided severe heat will not manifest.
However — and this is the crucial fact — the air quality benefits will manifest, no matter what the rest of the world does. Shindell’s team ran a version of their scenario in which the US came into compliance with a 2°C pathway but the rest of the world continued with current policies. “We found that US action alone would bring us more than two-thirds of the health benefits of worldwide action over the next 15 years,” Shindell testified, “with roughly half the total over the entire 50-year period analyzed.”

The air quality benefits arrive much sooner than the climate benefits. They are, at least for the next several decades, much larger. They can be secured without the cooperation of other countries. And, by generating an average of $700 billion a year in avoided health and labor costs, they will more than pay for the energy transition on their own. Climate change or no climate change, it’s worth ditching fossil fuels.”