DENVER - As firefighters work to contain the 416, Mailbox and Burro wildfires, Coloradans can see the results of increased particulates in the air, especially around sunrise and sunset.
Scientists have long warned about the health risks associated with particulate pollution, and laws such as the Clean Air Act have helped reduce emissions from industrial sources and cars. Loretta Mickley, a senior research fellow at Harvard University's John A. Paulson School of Engineering and Applied Sciences, said her team has uncovered another major threat to air quality in southwestern states.
"The U.S. has done tremendous work to clean the air, to make our air breathable and safe," she said, "but climate change could come along and throw a monkey wrench in that effort by increasing dust."
If climate pollution isn't sharply reduced, Mickley said, states including Colorado could experience unprecedented "mega droughts" in coming decades. She explained that without enough rainfall and as temperatures rise, more soil dries out and smaller particles end up airborne. Researchers have predicted that could lead to a 130-percent increase in premature deaths associated with dust, and triple the number of hospitalizations for cardiovascular and respiratory disorders.
Mickley added that more dust in the air carries other health risks, including Valley Fever, which is caused by a fungus that thrives in dry soils and can be fatal. If the world stays on its current emissions path, she said, the public health impacts of dust could be significant.
"The increased number of people dying every year in our worst-case scenario due to dust is about equivalent to a little less than the number of people who die every year in car crashes," she said.
Researchers have projected in the "best-case" scenario, where global warming is held below two degrees Celsius, rising fine dust levels could increase premature deaths by 20 percent, and hospital admissions by 60 percent.
The report is online at iopscience.iop.org.
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As Coloradans begin to weigh their options in this year's presidential election, a new Carbon Brief analysis projects that a second Biden term would help reduce climate pollution - but the administration will still fall short of meeting its 2030 goals.
Report co-author Simon Evans - senior policy editor at Carbon Brief - said by contrast, a second Trump term that successfully rolls back Biden initiatives, including the Inflation Reduction Act as promised, would add four billion extra tons of fossil fuel pollution.
"That's equivalent to the combined annual emissions of the European Union and Japan," said Evans. "That amount of extra emissions, four billion tons of greenhouse gas emissions by 2030, would cause global climate damage worth something like $900 billion."
Trump has repeatedly claimed that climate change is a hoax, and advanced policies that increased crude oil drilling in order to maintain American energy dominance.
Researchers project a second Trump term would wipe out all emission-reduction gains made over the past five years by installing wind turbines, solar panels, and other clean energy technologies across the globe twice over.
In the 20th century, Evans said nations controlling large fossil fuel reserves did hold significant economic and other advantages.
But in the 21st century and beyond, he said he believes countries with large portfolios of clean energy will have the advantage.
"Actually, clean energy technologies are a great way of bringing energy security," said Evans. "Because you're not relying on import, you're just relying on the wind and the sun that you have in your own country. And the U.S. is certainly very well endowed with wind and solar resources."
Four billion tons is also equivalent to the combined annual emissions of the world's 140 countries with the smallest carbon footprints.
Evans noted that people who can't afford air conditioning to survive extreme heat, or move away from areas prone to flooding and wildfire, will continue to face the biggest threats.
"The people around the world that are least responsible for climate change," said Evans, "whether that's in the poorest countries in the world, or the poorest people in the richest countries - those tend to be the people that are most exposed to the negative impacts of climate change."
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Environmental groups in Virginia are among those looking at how to improve and modernize electrical grid transmission.
Experts said the grid's age and current state aren't conducive to the boom in renewable energy projects being developed. The lack of preparation is being felt all over the country but particularly in Virginia, where the latest report card gives the state's grid operator the lowest score.
Quentin Scott, federal policy director for the Chesapeake Climate Action Network, said grid operators' long-term planning needs to consider increasing renewable energy.
"They don't really account for high usage of renewables," Scott pointed out. "They're not accounting for the popularity of the Inflation Reduction Act. They're not accounting for state policies that require states to be 100% clean energy by 2050 or 2040."
Other experts feel grid operators like Virginia's PJM Interconnections need to hire more people to deal with interconnection requests. But increased demand for those jobs makes it harder to address the problem. Virginia's General Assembly passed House Bill 862 to make the process more efficient.
If grid operators cannot make the changes in time, around 80% of the emissions reductions outlined in the Inflation Reduction Act might not happen. Scott and other environmental advocates are worried about losing ground. Along with the Federal Energy Regulatory Commission being a backstop authority for such projects, he noted microgrids can help improve the grid's efficiency.
"Solar panels that are on your roof or community solar projects; small businesses that erect you know, a wind turbine near their business," Scott explained. "Microgrids allow those sort of localized communities to have more planning, more control over their local resources."
Microgrids are also known to be weather resilient. Given the strong effects climate change is having on states' electrical infrastructure, it can be prudent to prevent blackouts. Research has shown if Texas had more connections with the Southeastern U.S., there would not have been as many power outages during the deadly 2021 winter storm.
Disclosure: The Chesapeake Climate Action Network contributes to our fund for reporting on Climate Change/Air Quality, and Sustainable Agriculture. If you would like to help support news in the public interest,
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The first satellite launched by a nonprofit organization is now circling the globe, getting ready to deliver data on methane pollution from oil and gas facilities worldwide.
The MethaneSAT satellite backed by the Environmental Defense Fund will help track methane emissions, a major contributor to global warming.
Jon Goldstein, senior director of regulatory and legislative affairs for the fund, said the advocacy group is focused on making the data transparent, accessible to anyone, and actionable.
"It's going to help the government, it's going to help industry, and it's going to help communities that want to know, 'What's going on in my backyard?'" Goldstein explained. "They'll have this publicly accessible, online data source."
Goldstein emphasized data collected should provide accountability from the more than 50 oil and gas companies that pledged at last year's Dubai "COP-28" climate summit to "zero-out" methane and eliminate routine gas flaring.
Last week, the Environmental Protection Agency published new methane regulations adopted in 2023. New Mexico adopted its own rules in 2021 to crack down on leaks, particularly from smaller facilities.
The new satellite is designed to measure known sources of methane and discover and quantify previously unknown sources. Goldstein noted it would allow companies and countries to take action sooner to help reverse the Earth's rising surface temperature.
"It is a very powerful greenhouse gas; more than 80 times more powerful, pound-for-pound, than carbon dioxide at driving climate change," Goldstein outlined. "That makes it a huge opportunity for folks that want to address this problem quickly, to get out there and get these leaks fixed."
New Mexico is second only to Texas as the largest oil-producing state in the U.S. MethaneSAT was launched last week from California's Vandenberg Air Force Base.
Disclosure: The Environmental Defense Fund contributes to our fund for reporting on Climate Change/Air Quality, Energy Policy, Environment, and Public Lands/Wilderness. If you would like to help support news in the public interest,
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