Researchers warn of a 70% increase in unhealthy summertime ozone levels across the US by 2050 due to climate change. A sharp reduction in emissions could counteract this increase, however, and reduce ozone pollution even as temperatures warm.
Research led by NCAR finds US ozone levels projected to increase by 70% by 2050 due to rising temperatures and climate change. However, a sharp reduction in emissions of ozone precursors could reduce pollution even as the climate warms.
A Northwestern University study reveals a 20% decrease in ozone levels when fuel prices drive residents to switch from ethanol to gasoline in flexible-fuel vehicles. The study uses big data and consumer surveys to analyze the impact of human behavior on air quality in São Paulo.
A new MIT study finds that international efforts to limit ozone-depleting chemicals have been successful in preventing extreme Arctic ozone losses, unlike Antarctica.
A NASA simulation shows that stratospheric ozone intrusions have a significant impact on ground-level ozone concentrations in the US West, with effects two to three times greater than previously estimated. High-resolution models can now comprehensively examine these events for the first time.
A new study reveals a previously unknown atmospheric phenomenon over the South Seas, which boosts ozone depletion in polar regions and could have a significant influence on future climate. The discovery of the 'OH shield' layer allows long-lived chemical compounds to enter the stratosphere, contributing to global impact.
Researchers at Northwestern University are observing the closest approach between Sgr A*, a supermassive black hole, and gas cloud G2, which could reveal insights into black hole growth. The data from Chandra X-ray Observatory and Very Large Array may provide clues about the feeding habits of these massive objects.
Physicist Chris Adami has solved the information paradox in Hawking's black hole theory by introducing the concept of stimulated emission. According to Adami, the information swallowed by a black hole is copied and preserved outside the event horizon through stimulated emission.
Scientists have identified four new man-made gases in the atmosphere, all contributing to ozone layer destruction. The new chlorofluorocarbons and hydrochlorofluorocarbon emissions surpass pre-1990s levels, posing significant concerns for the environment.
Astronomers have found a new superpowered small black hole named MQ1 in galaxy M83, which is classed as a microquasar with jets that heat and sweep away surrounding gas. The discovery sheds light on early universe evolution and provides insight into the growth of quasars.
Research by Meiyun Lin and colleagues found that Asian ozone pollution reaching Hawaii is relatively low in spring but rises significantly in autumn due to changes in atmospheric circulation. This shift has significant implications for understanding surface ozone levels globally.
New research by NASA scientists shows that signs of ozone hole recovery are not yet present, and temperature and winds continue to drive annual changes. The decline in chlorine levels has not yet led to a reduction in the size of the ozone hole.
Researchers have found evidence of iron and nickel in the jets from a typical black hole, revealing that these heavy atoms carry more energy than lighter particles. This discovery suggests that black holes' accretion disks power jets, which could generate detectable gamma rays and neutrinos.
Researchers found that sulfur dioxide and carbon dioxide releases from Siberian volcanoes could have created acidic rain, damaging plants and organisms. The study suggests that ozone depletion and temperature increases contributed to the end-Permian mass extinction on land.
The Stanford team found that the 'hot exciton effect' does not exist, contradicting widely accepted scientific theory. Instead, they suggest that disorder at the molecular level may play a key role in separating electron-hole pairs, leading to improved energy efficiency.
A team of astronomers discovered that black hole jets contain ordinary atoms, including nickel and iron, which provide the positive charge. The jets are accelerated to high speeds, with some moving at 66% of the speed of light, revealing new insights into their formation.
Researchers developed a new photodiode that can detect the entire range of UVC light while remaining insensitive to visible light from the sun. This device is solar blind and has minimal dark current, making it useful for tracking ozone depletion and communication in space.
Astronomers have found strong evidence that a galaxy's central black hole is blowing massive amounts of gas out of the galaxy, limiting its growth and rate of star formation. The process, observed in a galaxy called 4C12.50, is thought to be key to understanding how galaxies develop and regulate the growth of their central black holes.
A new study reveals that Pacific flights create the most amount of ozone, with the highest sensitivity in an area east of the Solomon Islands. Flights leaving and entering Australia and New Zealand result in the largest ozone production, with some flights producing up to 25,300 kg of ozone.
A new study by Prof. Sarah Kang found a significant relationship between ozone depletion and extreme daily precipitation in the Austral summer. The research used two global climate models to analyze the impact of stratospheric ozone depletion on precipitation patterns.
Astronomers have created time-lapse movies of a jet of superheated gas emanating from a supermassive black hole at the center of galaxy M87. The research team analyzed Hubble data to study the details of this process in understanding galaxy formation and black hole physics.
Astronomers have measured the magnetic field emanating from a swirling disk of material surrounding the black hole at the center of our Milky Way Galaxy. The measurement, made by observing a recently-discovered pulsar, is providing a powerful new tool for studying the mysterious region at the core of our home galaxy.
A new study suggests that the ozone hole could be causing a slight warming effect on the planet, rather than a cooling one. The ozone hole's impact on wind patterns causes clouds to move towards the South Pole, reducing their ability to reflect radiation and leading to increased temperatures.
A new study published in the Journal of Climate reveals that the Montreal Protocol, which phased out chlorofluorocarbons in 1987, also protected global hydroclimate and prevented major disruption to rainfall patterns. The treaty's success is attributed to its impact on atmospheric circulation, greenhouse gases, and evaporation cycles.
Astronomers at Durham University developed a new way to measure supermassive black holes' spin, which is linked to their role in driving galaxy growth. The technique uses the distance between a black hole and its feeding disc to estimate spin.
Research found that during extreme heat, plants' ozone absorption is curtailed, leading to increased air pollution and up to 20 days of ozone levels above safety threshold. This can result in thousands of premature deaths, mostly among people with respiratory diseases.
Astronomers observe VLT's real-time data of a gas cloud accelerating towards the Milky Way's supermassive black hole. The cloud is being grossly stretched by the black hole's extreme gravitational field, with its light becoming harder to see.
A new study estimates that human-caused outdoor air pollution causes around 470,000 premature deaths each year due to increased ozone levels. Additionally, fine particulate matter (PM2.5) is linked to an estimated 2.1 million annual deaths. The effects of past climate change on air quality and health are found to be relatively small.
Researchers at Indiana University found that titanium dioxide coatings, used in air-pollution-removal technology, convert abundant ammonia to nitrogen oxide, increasing harmful ozone pollution. The study's findings call into question the effectiveness of this technology in reducing pollution.
A recent study published in International Journal of Modern Physics B suggests that chlorofluorocarbons (CFCs) are responsible for global warming, contradicting conventional wisdom. The research, led by Qing-Bin Lu, reveals a strong correlation between CFC levels and global temperatures.
Astronomers may witness the birth of a black hole for the first time using a new analysis that predicts a distinct burst of light just before the black hole forms. The study suggests that this signature light burst could be detectable in nearby galaxies and provide valuable insights into black-hole formation.
Researchers found that sunlit snow is a major source of atmospheric bromine in the Arctic, purging pollutants and destroying ozone. The loss of sea ice could disrupt this delicate balance and have extreme effects on atmospheric chemistry.
A recent study published in Atmospheric Environment found that air pollution from wildland fires and urban areas is reducing air quality at Devils Postpile National Monument. Ozone concentrations exceeded California standards, posing a risk to sensitive individuals, and may have phytotoxic effects on plants.
A study using neutrons has explained how ozone causes severe respiratory problems by attacking the fatty lining of lungs. The attack leads to increased surface tension, impairing oxygen and carbon dioxide exchange.
Researchers found that high ozone levels interfere with pollinators finding flowers and predator insects finding host plants. Insects rely on volatile organic compounds to detect odors, but ozone degrades these compounds, leading to confusion.
OzoneMap is a free mobile app that provides real-time air quality reports for the greater Houston area. It features a map of the city with colored clouds illustrating ozone levels, allowing users to select from three different maps and access information on health effects.
Assistant professor of astronomy Misty Bentz will receive a five-year $862,769 NSF grant to measure distances to galaxies with known black hole masses and obtain clearer images of galaxies to predict black hole masses. This project aims to develop a shortcut for predicting black hole mass in any given galaxy through simple observations.
A new study from Rice University suggests that a widely used model to predict the impact of pollution controls has been too conservative. In Northeastern cities, ozone levels dropped significantly beyond expectations after cutting emissions of nitrogen oxides from 2002 to 2006.
A new NASA study reveals that extreme cold, man-made chemicals, and a stagnant atmosphere contributed to the 2011 Arctic ozone hole. The Arctic's ozone levels were about 20% lower than its late winter average due to unusual atmospheric conditions.
Researchers have found that entanglement across a black hole's event horizon plays a crucial role in determining the existence of a 'firewall' paradox. The study confirms and generalizes previous claims about entanglement in black holes, supporting Einstein's theory of gravity.
Researchers used NuSTAR to observe X-rays emitted by hot gas near a supermassive black hole, ruling out obscuring clouds and conclusively measuring its spin rate. The findings provide crucial clues about the fundamental relationship between black holes and their host galaxies.
Astronomers have measured the spin rate of a supermassive black hole, providing insights into the galaxy's evolution. The black hole's spin is linked to its accretion disk and can offer clues about the galaxy's past.
Researchers found a positive correlation between out-of-hospital cardiac arrests and exposure to both fine particulate matter and ozone in Houston. Daily average increases in particulate matter raised OHCA risk by 4.6 percent, while short-term increases in ozone level increased risk by 4.4 percent.
A large study found that one in 20 cases of pre-eclampsia may be linked to increased levels of ozone during the first three months of pregnancy. Mothers with asthma are more vulnerable, and ozone exposure was associated with a higher risk of premature birth and pre-eclampsia.
A new technique developed by Oxford University scientists can spot carbon monoxide within gas circling a supermassive black hole, 'weighing' its mass. This breakthrough enables the study of thousands of distant galaxies and spiral galaxies, previously hard to target.
A Johns Hopkins University scientist finds that ozone depletion has altered the mixing of waters in Southern Ocean, potentially impacting CO2 levels and global climate. The study's findings suggest a possible slowdown or reversal of ocean ventilation if stratospheric ozone recovers.
A new study reveals that ozone depletion has a greater impact on the jet stream's southward shift than increasing greenhouse gases. Researchers analyzed wind patterns over a 10-day period and found that ozone depletion was associated with a poleward shift of westerlies, while greenhouse gases were linked to an equatorward shift.
Susan Solomon, a leading atmospheric chemist, and Jean Jouzel, a French geochemist, have made groundbreaking contributions to climate science. They won the 2012 Vetlesen Prize for their work on the Antarctic ozone hole and longest-yet ice core record, respectively.
Scientists at the Universities of York and Leeds have made a significant discovery about the cause of ozone destruction over oceans. The research team found that the principal source of iodine oxide can be explained by emissions of hypoiodous acid and molecular iodine.
Astronomers have found gamma-ray flares originating 70 light-years away from a galaxy's central black hole, contradicting the long-held theory that such events occur only close to the black hole. The 2011 flares from galaxy 4C +71.07 provide the clearest evidence of this phenomenon.
Research finds that ozone pollution, even at low levels, significantly reduces agricultural worker productivity by 5.5%. The study's results challenge the common perception of environmental protection as a tax on producers.
The University of Illinois is developing ozone-resistant corn strains with the potential to increase yields and reduce costs, as estimated losses due to ozone damage in US corn production could be around $700 million. The research aims to improve crop resilience to environmental stressors.
Researchers used Earth-orbiting X-ray telescopes to observe a bingeing black hole that expels powerful beams of material, solving the debate over whether ULXs are black holes gorging themselves or more massive ones eating sedately. The discovery provides key insights into how jets are produced by a binging black hole.
Astronomers have detected radio-emitting jets from a stellar-mass black hole outside our galaxy, providing insight into extreme accretion rates. The discovery sheds light on the nature of ultraluminous X-ray sources and their connection to black hole binaries.
Astronomers have discovered a black hole with 17 billion solar masses in the heart of a small galaxy, NGC 1277. This massive object challenges current models of galaxy evolution and could be the largest known black hole of its kind.
Astronomers used the Hobby-Eberly Telescope to measure a massive black hole in galaxy NGC 1277 with a mass 17 billion Suns, rewriting theories on black hole formation. This unusual finding comes from a survey of the most massive galaxies in the universe.
Ground-level ozone concentrations are already high enough to damage crop production, reducing seed yields by roughly half a bushel per acre for each additional part per billion. Researchers found that potential increases in background ozone could lead to yield losses of 9-19 percent by 2030.
The Antarctic ozone hole reached its maximum size this year, covering an area of 8.2 million square miles, but was smaller than expected due to warmer temperatures. The average size of the ozone hole was 6.9 million square miles, with scientists attributing the change to natural fluctuations in weather patterns.
Ozone's impact on forest watersheds amplifies drought and alters stream flow, reducing available water supplies. Forest ecosystems and people dependent on water flow during dry seasons will be affected.
Astronomers report the discovery of S0-102, a star with an extremely short orbit near the supermassive black hole at the Milky Way's galactic center. The study aims to test Einstein's theory of general relativity and reveal the fabric of space and time around a black hole.