Ozone Holes News
May 20, 2019

Top Headlines

Antarctica Losing Six Times More Ice Mass Annually Now Than 40 Years Ago

Antarctica experienced a sixfold increase in yearly ice mass loss between 1979 and 2017, according to a new study. Glaciologists additionally found that the accelerated melting caused global sea ... read more

Chloroform Emissions Could Delay Ozone Recovery by Up to 8 Years

A new study identifies another threat to the ozone layer's recovery: chloroform -- a colorless, sweet-smelling compound that is primarily used in the manufacturing of products such as Teflon and ... read more

Ozone Depletion Increases Antarctic Snowfall, Partially Mitigates Ice Sheet Loss

Ozone layer depletion has increased snowfall over Antarctica in recent decades, partially mitigating the ongoing loss of the continent's ice sheet ... read more

Iron-Silica Particles Unlock Part of the Mystery of Earth's Oxygenation

The oxygenation of Earth's atmosphere was thanks, in part, to iron and silica particles in ancient seawater, according to a new study by geomicrobiologists. But these results solve only part of this ... read more
Latest Headlines
updated 8:23am EDT

Earlier Headlines

Air Pollution Increases ER Visits for Breathing Problems

As levels of ozone and fine particulate pollution (PM2.5) rise, more patients end up in the ER with breathing problems, according to the largest US study of air pollution and respiratory emergency ... read more

China's War on Particulate Air Pollution Is Causing More Severe Ozone Pollution

In China, the rapid reduction of the pollutant PM 2.5 dramatically altered the chemistry of the atmosphere, leading to an increase in harmful ground-level ozone pollution, especially in large ... read more

Pollutants from Wildfires Affect Crop and Vegetation Growth Hundreds of Kilometers from Impact Zone

The startling extent to which violent wildfires, similar to those that ravaged large swathes of California recently, affect forests and crops way beyond the boundaries of the blaze has been ... read more

Snow Over Antarctica Buffered Sea Level Rise During Last Century

An increase in snowfall accumulation over Antarctica during the 20th century mitigated sea level rise by 0.4 inches. However, Antarctica's additional ice mass gained from snowfall makes up for ... read more

How Ice Particles Promote the Formation of Radicals

The production of chlorofluorocarbons, which damage the ozone layer, has been banned as far as possible. However, other substances can also tear holes in the ozone layer in combination with ice ... read more

Greenhouse Gas 'Detergent' Recycles Itself in Atmosphere

A simple molecule in the atmosphere that acts as a 'detergent' to break down methane and other greenhouse gases has been found to recycle itself to maintain a steady global presence in the ... read more

Alpine Ice Shows Three-Fold Increase in Atmospheric Iodine

Analysis of iodine trapped in Alpine ice has shown that levels of atmospheric iodine have tripled over the past century, which partially offsets human-driven increases in the air pollutant, ... read more

Plasma-Based System Provides Radical New Path for Water Purification

Many of today's methods of purifying water rely on filters and chemicals that need regular replenishing or maintenance. Millions of people, however, live in areas with limited access to such ... read more

Ozone Hole Modest Despite Optimum Conditions for Ozone Depletion

The ozone hole that forms in the upper atmosphere over Antarctica each September was slightly above average size in 2018, scientists reported ... read more

Reducing Methane Emissions Can Play a Key Role in Reducing Ozone Worldwide

A new report points to inexpensive and profitable solutions to reduce methane emissions in the energy, waste, wastewater and agriculture ... read more

Coal Power Plant Regulations Neglect a Crucial Pollutant

Researchers determine that particle-forming sulfur dioxide is the most damaging pollutant from Texas' coal-fired power plants that lack equipment to scrub ... read more

Location of Large Mystery Source of Banned Ozone Depleting Substance Uncovered

Researchers from the University of Bristol have found significant ongoing emissions of a potent ozone-depleting substance from eastern ... read more

Air Pollution Leads to Millions of ER Visits for Asthma Attacks Worldwide

Nine to 33 million visits to the emergency room (ER) for asthma worldwide may be triggered by breathing in air polluted by ozone or fine particulate matter -- pollutants that can enter the ... read more

Substantial Changes in Air Pollution Across China During 2015 to 2017

The first detailed analysis of air pollution trends in China reveals a 20 per cent drop in concentrations of particulate pollution over the last three years ... read more

Long-Term Exposure to Ozone Has Significant Impacts on Human Health

A new study has utilized a novel method to estimate long-term ozone exposure and previously reported epidemiological results to quantify the health burden from long-term ozone exposure in three major ... read more

Air Pollution May Be Linked to Heightened Mouth Cancer Risk

High levels of air pollutants, especially fine particulate matter (PM2.5) and to a lesser extent, ozone, may be linked to a heightened risk of developing mouth cancer, suggests the first study of its ... read more

Tropics Are Widening as Predicted by Climate Models, Research Finds

Scientists have observed for years that Earth's tropics are widening in connection with complex changes in climate and weather patterns. But in recent years, it appeared the widening was ... read more

Protection for the Ozone Layer: Sugar Molecules Bind Harmful CFCs

Researchers have managed to make a breakthrough when it comes to dealing with the extremely ozone-depleting chlorofluorocarbon Freon 11. Their findings could make a major contribution to protecting ... read more

China Is Hot Spot of Ground-Level Ozone Pollution

In China, people breathe air thick with the lung-damaging pollutant ozone two to six times more often than people in the United States, Europe, Japan, or South Korea, according to a new assessment. ... read more

Natural Refrigerant Replacements Could Reduce Energy Costs and Conserve the Environment

The 1987 Montreal Protocol and the 1997 Kyoto Protocol called for countries around the world to phase out substances that deplete the ozone layer, but many HVAC systems still use synthetic ... read more

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