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>A study published today in Nature Climate Change by researchers at Columbia University examines the greenhouse warming effects of ozone-depleting substances and finds that they caused about a third of all global warming from 1955 to 2005, and half of Arctic warming and sea ice loss during that period. They thus acted as a strong supplement to carbon dioxide, the most pervasive greenhouse gas; their effects have since started to fade, as they are no longer produced and slowly dissolve.
>Ozone-depleting substances, or ODS, were developed in the 1920s and '30s and became popularly used as refrigerants, solvents and propellants. They are entirely manmade, and so did not exist in the atmosphere before this time. In the 1980s a hole in Earth's stratospheric ozone layer, which filters much of the harmful ultraviolet radiation from the sun, was discovered over Antarctica. Scientists quickly attributed it to ODS.
>The world sprang into action, finalizing a global agreement to phase out ODS. The Montreal Protocol, as it is called, was signed in 1987 and entered into force in 1989. Due to the swift international reaction, atmospheric concentrations of most ODS peaked in the late 20th century and have been declining since. However, for at least 50 years, the climate impacts of ODS were extensive, as the new study reveals.
The boomers say it can't be done. What else don't they know?
A punitive tax on motor fuels should provide the capital necessary to fund the research and development of solutions and alternatives. Another shovelful in the dirt of boomer faces. Its time to bury this generation!
How do you stay focused during long blocks of lectures?
Every Tuesday I have 6 hours worth of lectures and one 3 hour thermochem lecture, about halfway through I just loose all interest and motivation and I don’t pay attention
How do I keep myself motivated?
Is psychology literally just a huge scam? I already went to three psychologists to fix my social anxiety and all they ever say is that I should talk to more people and get confident. But even if I can trust one person the symptoms still persist with everyone else. I have been talking to people all my life and it doesn't solve anything. No solution. No scientific method. They all just sit there and take your money after giving you an advice you could find in a chinese cookie. Why do we allow this? Why do universities allow this? What the fuck?
After indicators of physical beauty and fertility, what does science have to say about what behaviours and personality traits are correlated with increased appeal to men seeking long term marriage material?
I just started a new job as a janny about 4 months ago. Everything was going fine and normal until I moved to a different route about a month ago.
I started just emptying bins and sweeping, basic stuff, no problem. Now I'm sanitizing the loo and mopping floors
Over the last month I've been experiencing a strange feeling about half way through my shift where my my mind begins snapping in and out of reality. Like imagine taking a mega dose of Benadryl, but without the visual and audio hallucinations or like being super drunk but without the physical impairment.
I'm working with quite a lot of the following two chemicals
Could either of these be responsible for this weird mental state I'm ending up in daily? I'm no chemist and I honestly have no clue what exactly I'm working with.
do any of you think it's possible to engineer something that could be spread into the breathable athmospshere that would only kill beings with certain genes?
