The Earth has always "cycled" it is not static, it slowly swings from one side to the other like a pendulum.
"Little Ice Age" during the dark ages significantly added to the loss of people. They had snow in June and August!
Much of the base data gathered by Gore and his Global Warming group was good. But the conclusions they drew from that data was badly flawed.
The deep ice cores showed it clearly, again and again, and again, a short sharp upward spike, followed by a quick drop into the deep freeze, then a long long long slow climb.
Global Warming was all about generating money and power, not doing anything good for the environment. Just like making all the Air conditioners, Refrigerators, etc change to a different coolant was not about saving the ozone. It was about money and power. All those cars, all those house central AC units, all those coolers all had to be replaced over time. All putting money in people's pockets that wouldn't have been there otherwise.
Ohhh and 1 day of any volcanic eruption does more harm to the ozone layer than everything mankind does all year long. Don't believe me, fine, go do the research.
But ignore the hype, find the data, draw your own conclusions. And before you believe someone, check to see who's putting what in his pockets, or who's pockets he has his hand in. Follow the money!