Tag: pollution
A Pollution Lawsuit Could Limit the Forest Service’s Use of Fire Retardant
A federal judge is hearing arguments today in a Montana lawsuit that seeks to curb the U.S. Forest Service’s use of aerial fire retardant over concerns that the chemical mix is polluting waterways.
Shutting Down Nuclear Power Could Increase Air Pollution, Finds MIT Study
If, however, more renewable energy sources become available to supply the energy grid, as they are expected to by the year 2030, air pollution would be curtailed, though not entirely. The team found that even under this heartier renewable scenario, there is still a slight increase in air pollution in some parts of the country, resulting in a total of 260 pollution-related deaths over one year. When they looked at the populations directly affected by the increased pollution, they found that Black or African American communities — a disproportionate number of whom live near fossil-fuel plants — experienced the greatest exposure. “They also calculated that more people are also likely to die prematurely due to climate impacts from the increase in carbon dioxide emissions, as the grid compensates for nuclear power’s absence,” adds the report. “The climate-related effects from this additional influx of carbon dioxide could lead to 160,000 additional deaths over the next century.”
Lead author Lyssa Freese, a graduate student in MIT’s Department of Earth, Atmospheric and Planetary Sciences (EAPS), said: “We need to be thoughtful about how we’re retiring nuclear power plants if we are trying to think about them as part of an energy system. Shutting down something that doesn’t have direct emissions itself can still lead to increases in emissions, because the grid system will respond.”
Read more of this story at Slashdot.
Designer houseplants are engineered to fight air pollution
NASA launches powerful air quality monitor to keep an eagle-eye on pollution
NASA has launched an innovative air quality monitoring instrument into a fixed-rotation orbit around Earth. The tool is called TEMPO, which stands for Tropospheric Emissions Monitoring of Pollution instrument, and it keeps an eye on a handful of harmful airborne pollutants in the atmosphere, such as nitrogen dioxide, formaldehyde and ground-level ozone. These chemicals are the building blocks of smog.
TEMPO traveled to space hitched to a SpaceX Falcon 9 rocket launching from Cape Canaveral Space Force Station. NASA says the launch was completed successfully, with the atmospheric satellite separating from the rocket without any incidents. NASA acquired the appropriate signal and the agency says the instrument will begin monitoring duties in late May or early June.
Spacecraft separation confirmed! The Intelsat satellite hosting our @NASAEarth & @CenterForAstro#TEMPO mission is flying free from its @SpaceX Falcon 9 rocket and on its way to geostationary orbit. pic.twitter.com/gKYczeHqV5
— NASA (@NASA) April 7, 2023
TEMPO sits at a fixed geostationary orbit just above the equator and it measures air quality over North America every hour and measures regions spaced apart by just a few miles. This is a significant improvement to existing technologies, as current measurements are conducted within areas of 100 square miles. TEMPO should be able to take accurate measurements from neighborhood to neighborhood, giving a comprehensive view of pollution from both the macro and micro levels.
This also gives us some unique opportunities to pick up new kinds of data, such as changing pollution levels throughout rush hour, the effects of lightning on the ozone layer, the movement of pollution related to forest fires and the long-term effects of fertilizers on the atmosphere, among other data points. More information is never bad.
TEMPO is the middle child in a group of high-powered instruments tracking pollution. South Korea’s Geostationary Environment Monitoring Spectrometer went up in 2020, measuring pollution over Asia, and the ESA (European Space Agency) Sentinel-4 satellite launches in 2024 to handle European and North African measurements. Other tracking satellites will eventually join TEMPO up there in the great black, including the forthcoming NASA instrument to measure the planet’s crust.
You may notice that TEMPO flew into space on a SpaceX rocket and not a NASA rocket. This is by design, as the agency is testing a new business model to send crucial instruments into orbit. Paying a private company seems to be the more budget-friendly option when compared to sending up a rocket itself.
This article originally appeared on Engadget at https://www.engadget.com/nasa-launches-powerful-air-quality-monitor-to-keep-an-eagle-eye-on-pollution-170321643.html?src=rss
Plastic wet wipes ban proposed under plan to tackle water pollution
Scientists Propose Turning Carbon Pollution Into Baking Soda and Storing it In Oceans
Scientists have set out a way to suck planet-heating carbon pollution from the air, turn it into sodium bicarbonate and store it in oceans, according to a new paper. The technique could be up to three times more efficient than current carbon capture technology, say the authors of the study, published Wednesday in the journal Science Advances….
The team have used copper to modify the absorbent material used in direct air capture. The result is an absorbent “which can remove CO2 from the atmosphere at ultra-dilute concentration at a capacity which is two to three times greater than existing absorbents,” Arup SenGupta, a professor at Lehigh University and a study author, told CNN. This material can be produced easily and cheaply and would help drive down the costs of direct air capture, he added. Once the carbon dioxide is captured, it can then be turned into sodium bicarbonate — baking soda — using seawater and released into the ocean at a small concentration.
The oceans “are infinite sinks,” SenGupta said. “If you put all the CO2 from the atmosphere, emitted every day — or every year — into the ocean, the increase in concentration would be very, very minor,” he said. SenGupta’s idea is that direct air capture plants can be located offshore, giving them access to abundant amounts of seawater for the process.
Stuart Haszeldine, professor of carbon capture and storage at the University of Edinburgh, who was not involved in the study, told CNN that the chemistry was “novel and elegant.” The process is a modification of one we already know, he said, “which is easier to understand, scale-up and develop than something totally new.”
Read more of this story at Slashdot.
IKEA made a smart air quality sensor to track indoor pollution
IKEA already has a side table that doubles as an air purifier, but now it has a way to gauge just how clean that air really is. The home store has introduced a smart indoor air quality sensor, the Vindstyrka, that gauges particulate matter levels (those smaller than 2.5 micrometers), humidity, temperature and the load of gaseous pollutants. Ideally, you’ll know if your cleaning or cooking habits are making you sick.
Vindstyrka works by itself, but it unsurprisingly becomes more useful when connected to IKEA’s Dirigera smart home hub. You can check air quality through the company’s app, and have the monitor control other devices. It can tell a Starkvind purifier to ramp up the fan speed based on particulate levels, for instance.
IKEA plans to release Vindstyrka in all its markets starting in April. The company hasn’t revealed pricing as we write this, but the feature set suggests it will be more affordable than high-end air quality monitors (such as Airthings’ $299 View Plus) that also track CO2, radon and air pressure. It may be a viable option if the temperature and humidity sensors built into your smart speaker aren’t enough.