Climate change: Making or not making air pollution in America worse?

There are three distinct possibilities: There is evidence that climate change has altered the concentration or level of pollution in air The evidence of the effect climate change has on the concentration or level of pollution in air is lacking Climate change has no influence on pollution in air period The American Lung Association seems … Read more

Federal court judge reinstates methane-waste rule; BLM rule-rescission-attempt fails

The below Jul. 16, 2020 press release is from the Center for Biological Diversity. A federal judge late yesterday reinstated the Bureau of Land Management’s 2016 methane waste rule, aimed at protecting people and the climate from methane waste and pollution from oil and gas extraction on public lands. The ruling is the third defeat … Read more

1940s-’80s global-mean-surface-temp normalization: Were Earth-covering sulfate aerosol clouds the cause?

Between roughly 1850 and the present day, the trend in global mean surface temperature (GMST) has, generally speaking, been positive, meaning the GMST has been rising. Interestingly, though, from 1940 to 1980 GMST stabilized. (See temperature plot at bottom). Incidentally, as reported by NASA’s Earth Observatory the GMST has increased a total of 0.7 degrees … Read more

Ready to roll: Hybrid renewable natural gas line-haul loco cuts fuel use in half, emissions by 99.5 percent

The below Jul. 22, 2020 press release is from OptiFuel Systems OptiFuel Systems (“OptiFuel”), a system integrator of Cummins and BAE Systems hybrid power products for decarbonizing the rail, marine, and microgrid power market, is in the process of finalizing a $2.6 million U.S. Department of Energy (DOE) grant to demonstrate a pre-production Renewable Natural … Read more

Continued planet warming predicted; natural variation, human influence named likely contributing factors

The below Jul. 8, 2020 press release is from the World Meteorological Organization. The annual mean global temperature is likely to be at least 1° Celsius above pre-industrial levels (1850-1900) in each of the coming five years (2020-2024) and there is a 20% chance that it will exceed 1.5°C in at least one year, according … Read more

Adopted rule calls for 300,000 non-polluting trucks, vans on California roads by 2035

In 2014 on American roadways, a total 3.0257 trillion vehicle miles of travel were recorded. Of that amount, 169.83 billion miles that year were tallied in heavy-duty trucks.1 Assuming the calculation is correct, that’s 5.612 percent. In California in 2014, meanwhile, driving miles totaled 332.8572 billion or 11 percent of the 3.0257 trillion total miles … Read more

A win for air, environment, people in San Diego. Keep the successes coming!

The below Jun. 15, 2020 press release is from the Sierra Club. Late last week, the Sierra Club and six other environmental groups won an important case involving the County of San Diego’s Climate Action Plan. The opinion explained in detail why the greenhouse gas mitigation measure was unenforceable. In addition to agreeing with the … Read more

Big boost in EV ‘adoption’ could improve air quality, spark economic/jobs growth, in California, group insists

“Dedicated high-speed rail dollars kept in the Valley will simply go farther,” the Air Quality Matters blog post of Jun. 14th, showed how $4.2 billion in state rail bonds, in being applied to construction work in California’s San Joaquin Valley, could be a tremendous asset where hiring, stimulating local economies and improving area and state … Read more

With older, gas-fired appliance use unhealthy air in homes is oftentimes found

Natural gas. It is used to dry our clothes, cook our food, heat our water and warm our homes. All true. But, from an air quality standpoint, how clean-burning or unhealthy are the gas-fired appliances that we use? Many, apparently, just don’t make the grade. As far as unhealthy indoor air quality from natural gas-powered … Read more