When Linda Lee received a sample of shellfish from an Alaskan reservation in 2005, she was looking for PCBs, or ...

This mechanism has been designed to prevent ... aluminium oxide can act as a catalyst for chemical reactions that involve chlorine, much like the process that led to ozone depletion from ...

These clouds accelerate chemical reactions ... a minor ozone reduction significantly increases UV-B radiation, heightening the risks to human health and ecosystems. Caused by chlorofluorocarbons ...

When CFCs drift up into the stratosphere, they can break down ozone under certain seasonal conditions. The following year, those relevations led to the drafting of the Montreal Protocol—an ...

Researchers found evidence that quickly confirmed the ozone hole's cause - chlorofluorocarbons ... ozone can also be created by photochemical reactions between the sun and pollution from vehicle ...

Get Instant Summarized Text (Gist) Increases in methane emissions could significantly impact the recovery of the stratospheric ozone layer, especially in polar regions. Methane, while a potent ...

While re-entry mechanisms prevent long-term space debris ... oxide particles could take 20 to 30 years to descend into the ozone layer, making it difficult to assess their full impact in the ...

In 1990, Margaret Thatcher urged further support for the Montreal Protocol so that CFCs could be phased out completely and developing nations could afford ozone friendly technologies.

In the 1970s and 1980s, the ozone layer was devastated by a group of chemicals known as CFCs that were widely used in fridges, spray cans and cleaning products. The 1987 Montreal protocol phased ...

BEIJING -- Chinese researchers have revealed that increases in methane emissions could have an unexpected positive impact on future ozone recovery, shedding new light on climate governance.