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we have proof that we have hurt the atmosphere and climate with greenhouse gases when we used CFCs back in the day. Still to this day, CFCs are eating away the ozone layer, especially in Antarctica, which allows more harmful radiation to enter the atmosphere.
As the level of atmospheric CFCs began to drop, the ozone layer started repairing itself. While the going is slow—a lot of the CFCs we released in the 1970s and 80s are still floating around doing damage—scientists hope the ozone layer will be back to normal by the end of this century.
Oddly enough, the depleted ozone layer did have one positive side effect: It helped curb global warming. The thinned ozone of the Antarctic led to brighter clouds that reflected some of the sun’s radiation away from Earth. Cutting out this effect may give global warming a slight boost, but scientists are quick to note that we’re far better off with a healthy ozone layer.
Measurements indicate the hole in the ozone layer is the smallest it has been in 10 years, and could be completely gone within a few decades.
So why is it shrinking? The hole was originally said to be caused by human-made chlorofluorocarbons (CFCs), chemicals that, until they were banned in the 1980s, were commonly used in aerosols. By getting rid of CFCs, we've allowed the ozone layer to slowly repair itself, the European Space Agency reports.
reply to post by bobs_uruncle
I didn't care to read any reply to your post ... but you have to keep in mind that global warming concerns the whole planet (you failed to mention, for example, that temperatures in Rio de Janeiro are unusually high ... more then 50ºC). You have to see the planet as a whole and model what is happening as a whole and locally to begin to understand that our development path is unsustainable.
... But I don't even imagine the cold you are experiencing.
Thus the monsoon-like climate has dry and mild winters and springs, and very wet and warm summers and autumns. As a result, temperatures over 40 °C (104 °F), that may happen about year-round but are much more common during the summer, often mean the actual temperature feeling is over 50 °C (122 °F), when there is little wind and the relative humidity percentage is high.
reply to post by CaticusMaximus
There are many variables involved in climate that is impossible to forecast, if we can't forecast weather (locally for a year) is completely stupid to believe a politician can predict the whole earth climate and heating or cooling trends....
reply to post by EnPassant
Ok enough is enough- several posters think more government is the answer- and it should take large scale actions, control everything. Do you think the world-wide sale and exchange of carbon allotments is a good idea- can anyone show a socialized country that improves the lives of all? There are no examples, Greece comes to mind as what happens or worse. A poster several pages ago trumpeted the French model of shorter work weeks (and longer vacations). Too much productivity is that our problem?
I have worked in and around the government for 40 years, managed millions in federal grants and hundreds of millions in state and local projects. While the private sector needs clear rules, government never ever matches the productivity of the private sector. Government is corrupted by many things, but one is universal - political patronage- hiring and retaining staff based on political favors and donations and not work ability. Government can do little well- period. My company competes with a public sector similar program, they cost 3 times more and do 1/3 the work, yet they get budget increases (a reward) and are secure and we can''t raise our rates to pass on real costs, and barely survive- its so abusive and government always puts it owns interest above the common good, worse than private companies.
A globally managed bureaucracy is Al Gore's idea to trade carbon credits and also pass more wealth to undeveloped nations. Would that be run well? would it work. Look at our foreign policy, seems to me we basically bride rulers in many places, examples, Pakistan and Egypt, to do what we want, which they don't, but they keep the money anyway- money we borrow from China by the way. Ok, enough of this rant- back to topic.
I posted a few pages back that the normal climate of the earth over the last million years is an ice age (ten of them lasting 100,000 years each +/-, with oceans 200-300 feet lower, and the habitable zone mostly Africa and Central & some of South American, maybe 1/2 to 1/3 of the US- maybe at best. THAT IS NORMAL, what we have now is a brief interlude and is probably going to end in the next 500 to 1,000 years, or maybe tomorrow. There is no keeping the once pristine climate of when, 300 years ago? 1,000, or what we even have now. So stop talking about government programs to stop climate change- IT IS GOING TO CHANGE ANYWAY on its own. Like a bunch of kids arguing over who gets the last cookie when the house is on fire.
I'm not saying I have an answer, I am saying stop these arguments that do not deal with the real fact that there will be another 1/2 mile thick ice sheet over 1/3 of the US in the near future (in geologic time frames) no matter what, and that needs to be discussed more than anything. We CAN NOT keep what we have now, its a temporary illusion, nor the climate we had for the past 10,000 years- that is not possible and pointless because its not our climate- do you get it now?
Suggestions- keep our population manageable (that's really the top problem to solve affecting most others), can government do that- no (though they try by wars which they bumble into). Plan and invest in space travel, we will need that within generations, yes we need clean energy, sustainable food and water supplies (in an ice age or space), but without population control those things are hopeless- and any climate recovery plans are meaningless- MEANINGLESS !!!! Earth is normally an ice age- think about what that means above all this other chatter.
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