A catastrophic drop in atmospheric ozone layer levels around the tropics is likely to have contributed to a bottleneck in the human population around 60,000 to 100,000 years ago, an international research team has suggested. The loss of the ozone layer, triggered by the eruption of the Toba supervolcano located in present-day Indonesia, might solve ...
A new paper quantifying small levels of iodine in Earth’s stratosphere could help explain why some of the planet’s protective ozone layer isn’t healing as fast as expected. The paper posits a set of connections that link air pollution near the Earth’s surface to ozone destruction much higher in the atmosphere. That higher-level ozone protects ...
Talks of climate change and shifting weather patterns have largely been focused on the negative in recent times, such as the wildfires of the Amazon or Australia, record carbon dioxide emissions, rapid melting of glaciers, and so on. However, not everything is all doom and gloom. There are some positive developments with regard to climate ...
New research published in Environmental Research Letters has revealed that thanks to the Montreal Protocol, today’s global temperatures, and global warming in general, are considerably lower. And by mid-century, the Earth will be — on average — at least 1°C cooler than it would have been without the agreement. Mitigation is even greater in regions ...
Beijing has denied being responsible for the rapid increase in global emissions of CFC-11, a chlorofluorocarbon that is known to damage the ozone layer. During the Montreal Protocol in 1987, multiple nations agreed to phase out CFC emissions to protect the ozone layer and prevent climate aberrations. However, a recent report in the magazine Nature ...
When scientists recently discovered a surge in the use of CFC-11, an ozone-destroying chemical, they were perplexed. Since the chemical was banned, its increased use did not make any sense. The researchers then discovered that the chemical was being used widely in China. The source CFC-11, also known as freon-11, is a chemical that was ...
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