Current Ozone Hole News and Events

Current Ozone Hole News and Events, Ozone Hole News Articles.
Sort By: Most Relevant | Most Viewed
Page 1 of 25 | 1000 Results
ET phones home!
A team of researchers from the Hebrew University of Jerusalem has discovered the first evidence of radio flares emitted only long after a star is destroyed by a black hole. (2021-02-23)

Long-term exposure to low levels of air pollution increases risk of heart and lung disease
Analysis of records for more than 63 million Medicare enrollees from 2000 to 2016 finds long-term exposure to air pollution had a significant impact on the number of people hospitalized for cardiac and respiratory conditions. Researchers examined three components of air pollution: fine particulate matter, nitrogen dioxide and ozone. Even levels lower than national standards affected heart and respiratory illnesses. (2021-02-22)

Scientists link star-shredding event to origins of universe's highest-energy particles
A team of scientists has detected the presence of a high-energy neutrino in the wake of a star's destruction as it is consumed by a black hole. This discovery sheds new light on the origins of Ultrahigh Energy Cosmic Rays--the highest energy particles in the Universe. (2021-02-22)

NASA's Swift helps tie neutrino to star-shredding black hole
For only the second time, astronomers have linked an elusive particle called a high-energy neutrino to an object outside our galaxy. Using ground- and space-based facilities, including NASA's Neil Gehrels Swift Observatory, they traced the neutrino to a black hole tearing apart a star, a rare cataclysmic occurrence called a tidal disruption event. (2021-02-22)

42,000-year-old trees allow more accurate analysis of last Earth's magnetic field reversal
The last complete reversal of the Earth's magnetic field, the so-called Laschamps event, took place 42,000 years ago. Radiocarbon analyses of the remains of kauri trees from New Zealand now make it possible for the first time to precisely time and analyse this event and its associated effects, as well as to calibrate geological archives such as sediment and ice cores from this period. Simulations based on this show considerable effects in the Earth's atmosphere. (2021-02-19)

The mass of Cygnus X-1's black hole challenges stellar evolution models
Weighing in at roughly 21 solar masses, the black hole in the X-ray binary system Cygnus X-1 is so massive that it challenges current stellar evolution models, a new study reveals. (2021-02-18)

Magnetic reversal 42,000 years ago triggered global environmental change
Nearly 42,000 years ago, when Earth's magnetic fields reversed, this triggered major environmental changes, extinction events, and long-term changes in human behavior, a new study reports. (2021-02-18)

First black hole ever detected is more massive than we thought
An international team, including researchers from National Astronomical Observatories of the Chinese Academy of Sciences (NAOC), found that the first black hole, Cygnus X-1, contains a stellar-mass black hole with 21 solar mass and rotates at a speed close to the speed of light. (2021-02-18)

Researchers have proved that that ozone is effective in disinfecting Coronavirus
It is possible to destroy the virus within minutes by gaseous ozone, which can be produced synthetically indoors. The advantage of gaseous ozone over liquid disinfectants (such as alcohol and bleach) is its ability to treat entire rooms, including all objects found in it and hard-to-reach locations. (2021-02-17)

NASA-funded network tracks the recent rise and fall of ozone depleting pollutants
A short-lived resurgence in the emission of ozone depleting pollutants in eastern China will not significantly delay the recovery of Earth's protective 'sunscreen' layer, according to new research published Feb. 10 in Nature. (2021-02-17)

The vertical evolution of volatile organic compounds vary between winter and summer
Scientists have discovered that pollution concentration varies between seasons. A new study, conducted in the North China Plain, determined where volatile organic compounds (VOCs) are distributed within the vertical layers of the atmosphere, and found notable changes from winter to summer. (2021-02-15)

Emissions of banned ozone-depleting substance back on decline
After a mysterious and sharp increase between 2012 and 2017 that could be traced to eastern China global emissions of a potent (and banned) substance notorious for depleting the Earth's ozone layer - the protective barrier that absorbs the Sun's harmful UV rays - have fallen rapidly in recent years and are now as low as never before since measurements began in this region in 2008, according to new atmospheric analyses published in Nature today. (2021-02-11)

Combination of pine scent and ozone as super source of particulate emissions
Scientists have managed to figure out why conifer forests produce so many fine particles into the atmosphere. Aerosol particles are particularly abundant when ?-pinene, the molecule responsible for the characteristic pattern of pine trees reacts with atmospheric ozone. (2021-02-11)

Hubble uncovers concentration of small black holes
Scientists were expecting to find an intermediate-mass black hole at the heart of the globular cluster NGC 6397, but instead they found evidence of a concentration of smaller black holes lurking there. New data from the NASA/ESA Hubble Space Telescope have led to the first measurement of the extent of a collection of black holes in a core-collapsed globular cluster. (2021-02-11)

Placing cosmological constraints on quantum gravity phenomenology
Through new research published in EPJ C, researchers have used well-established cosmological observations to place tighter constraints on the quadratic model of the Generalized Uncertainty Principle, while discrediting the linear model. (2021-02-10)

Research shows emissions of banned ozone-depleting substance are back on the decline
Global emissions of a potent substance notorious for depleting the Earth's ozone layer -- the protective barrier which absorbs the Sun's harmful UV rays -- have fallen rapidly and are now back on the decline, according to new research. (2021-02-10)

Reductions in CFC-11 emissions put ozone recovery back on track
An international research team, including scientists from MIT, have observed a global reduction of the banned ozone-depleting chemical CFC-11, after it spiked unexpectedly several years ago. (2021-02-10)

Rare blast's remains discovered in Milky Way's center
Astronomers may have found our Galaxy's first example of an unusual kind of stellar explosion. This discovery, made with NASA's Chandra X-ray Observatory, adds to the understanding of how some stars shatter and seed the universe with elements critical for life on Earth. (2021-02-08)

New research reveals drivers of regionally different ozone responses to the COVID-19
Professor Ding Aijun explored global air-quality changes during COVID-19 lockdowns and regional disparities in O3 responses to emission reductions. They integrated multiple observational datasets, including global air quality monitoring network and satellite retrievals, to shed more light on the regional differences in interactions between emissions, atmospheric chemistry, and meteorological conditions. (2021-02-07)

Sensor and detoxifier in one
Ozone is a problematic air pollutant that causes serious health problems. A newly developed material not only quickly and selectively indicates the presence of ozone, but also simultaneously renders the gas harmless. As reported by Chinese researchers in Angewandte Chemie, the porous '2-in-one systems' also function reliably in very humid air. (2021-02-05)

Extreme UV laser shows generation of atmospheric pollutant
Hokkaido University scientists show that under laboratory conditions, ultraviolet light reacts with nitrophenol to produce smog-generating nitrous acid. (2021-02-02)

Improved model estimates impact of ozone on soy crops
The impact of ozone on soybean production can be predicted more accurately thanks to improvements to a computer modelling system. (2021-02-01)

Backreaction observed for first time in water tank black hole simulation
Scientists have revealed new insights into the behaviour of black holes with research that demonstrates how a phenomenon called backreaction can be simulated. (2021-02-01)

Turning on the switch for plasticity in the human brain
Shigeki Watanabe and colleagues describe how glutamate signals are transmitted across synapses to turn on the switch for synapatic plasticity, the ability of synapses to strengthen or weaken over time in response to increases or decreases in their activity. (2021-01-29)

Extreme black holes have hair that can be combed
Black holes depend on only three parameters (mass, angular momentum, and charge), a uniqueness property known as the ''no-hair'' theorem. In a Letter published in the Physical Review D, researchers announce finding an exception: a class of black holes, known as extreme black holes, that has classical hair in the vaccuum Einstein theory. The newly discovered hair depends on how the black hole formed, thus violating the uniqueness, or ''no hair'' theorem. (2021-01-26)

First comprehensive LCA shows reprocessed medical devices cut GHG emissions in half
Hospitals could cut emissions associated with some medical device use in half by opting instead for reprocessed 'single-use' medical devices. The LCA evaluated the use of a remanufactured electrophysiology catheter compared with the use of original catheters for 16 different environmental impact categories and found that the use of reprocessed devices was superior in 13 categories. (2021-01-25)

Reactive halogen from domestic coal burning aggravates winter air pollution
During the winter in the North China Plain, scientists found high concentrations of reactive halogen gases (BrCl, HOBr, Cl2) in the atmosphere which was associated with widespread coal burning in rural areas. Halogen atoms released from BrCl and Cl2 under sunlight significantly increased the oxidative capacity, and has the potential to boost the productions of secondary aerosols - the major components of winter haze in northern China - and the toxic form of mercury. (2021-01-25)

Medicated drops may help close macular holes, helping some patients avoid surgery
Medicated drops may help close small macular holes over a two- to eight-week period, allowing some people to avoid surgery to fix the vision problem, a new study suggests. (2021-01-21)

Purely organic hole transporter
Durable, high-performing perovskite solar cells also require durable, high-performing charge-transporting layers. Scientists have developed the first organic hole transporter that does not need a dopant to attain high charge mobility and stability. According to the study published in the journal Angewandte Chemie, this novel hole-transporting layer outperforms reference materials and protects the perovskite organic cell from air humidity. (2021-01-18)

A most distant signal
Nearly every galaxy hosts a monster at its center -- a supermassive black hole millions to billions times the size of the Sun. Some of these black holes are particularly active, whipping up stars, dust and gas into glowing accretion disks emitting powerful radiation into the cosmos as they consume matter around them. These quasars are some of the most distant objects that astronomers can see, and there is now a new record for the farthest one ever observed. (2021-01-15)

Galaxies hit single, doubles, and triple (growing black holes)
When three galaxies collide, what happens to the huge black holes at the centers of each? A new study using NASA's Chandra X-ray Observatory and several other telescopes reveals new information about how many black holes are furiously growing after these galactic smash ups. (2021-01-14)

Could we harness energy from black holes?
Physicists have found a new way to extract energy from black holes by breaking and rejoining magnetic field lines near the event horizon. (2021-01-13)

Early COVID-19 lockdowns had less impact on urban air quality than first believed
The first COVID-19 lockdowns led to significant changes in urban air pollution levels around the world, but the changes were smaller than expected - a new study reveals. (2021-01-13)

Most distant quasar discovered sheds light on how black holes grow
A team of astronomers led by the University of Arizona has observed the most distant quasar to date. Fully formed just 670 million years after the Big Bang, the quasar is 1000 times more luminous than the Milky Way. It is powered by the earliest known supermassive black hole, which weighs in at more than 1.6 billion times the mass of the sun. The discovery provides insight into the formation of massive galaxies in the early universe. (2021-01-12)

Quasar discovery sets new distance record
Astronomers using the Atacama Large Millimeter/submillimeter Array (ALMA), along with other telescopes, have discovered the most distant quasar yet found. The bright quasar, powered by a supermassive black hole at the core of a galaxy, is seen as it was only 670 million years after the Big Bang, and is providing valuable clues about how such huge black holes and their host galaxies formed in the early Universe. (2021-01-12)

The earliest supermassive black hole and quasar in the universe
The most distant quasar known has been discovered. The quasar, seen just 670 million years after the Big Bang, is 1000 times more luminous than the Milky Way, and is powered by the earliest known supermassive black hole, which weighs in at more than 1.6 billion times the mass of the Sun. Seen more than 13 billion years ago, this fully formed distant quasar is also the earliest yet discovered. (2021-01-12)

NASA missions help investigate an 'Old Faithful' active galaxy
Yellowstone National Park's Old Faithful geyser regularly blasts a jet of boiling water high in the air. Now, an international team of astronomers has discovered a cosmic equivalent, a distant galaxy that erupts roughly every 114 days. (2021-01-12)

'Old Faithful' cosmic eruption shows black hole ripping at star
You've heard of Old Faithful, the Yellowstone National Park geyser that erupts every hour or two, a geological phenomenon on a nearly predictable schedule. Now, an international group of scientists who study space have discovered an astronomical 'Old Faithful' - an eruption of light flashing about once every 114 days on a nearly predictable schedule. (2021-01-12)

Galaxy mergers could limit star formation
Astronomers have looked nine billion years into the past to find evidence that galaxy mergers in the early universe could shut down star formation and affect galaxy growth. (2021-01-11)

Electrically switchable qubit can tune between storage and fast calculation modes
To perform calculations, quantum computers need qubits to act as elementary building blocks that process and store information. Now, physicists have produced a new type of qubit that can be switched from a stable idle mode to a fast calculation mode. The concept would also allow a large number of qubits to be combined into a powerful quantum computer, as researchers from the University of Basel and TU Eindhoven have reported in the journal Nature Nanotechnology. (2021-01-11)

Page 1 of 25 | 1000 Results
   First   Previous   Next      Last   
Brightsurf.com is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to Amazon.com.