well yes and no no the sciencinsts have come to the conclusion they are not for sure they haven't studied the ozone long enough to be sure of the effects long term knee jerk reactions were to ban freon because that what made the (since been proved wrong) now some scieneints are begining to think this may a natural progresion of the aging of the earth re science planetearth/ nat
Yes! Global warming! Our temperatures on Earth have been going up slowly but steadily due to the sun's rays getting trapped in the greenhouse layer. You should watch or read An Inconvinient Truth by Al Gore for more info.