I was chatting with some friends over the weekend. They said they don't believe in climate change because there have always been warm periods and cold periods.
Yes, there have been two periods over the past 60 million years where the world warmed by 4-6 degrees. Those naturally occurring warming trends happened over thousands of years.
And here's what's different this time.
The the warm period we're currently experiencing is happening over a scale of a couple hundred years. We've already gained nearly 2 degrees in the past 100 years and the warming trend is accelerating.
There aren't any naturally occurring phenomena that explain the drastically different and much faster rate of change. There are cool visuals that demonstrate the point at Bloomberg Interactive.
Real data doesn't lie.
There isn't any scientific controversy; 97 out of 100 climatologists agree that global warming is happening and that it is caused by human factors.
But it's OK if you don't agree. Every time there's been a rapid dramatic change in the earth's climate, the dominant life form has been wiped out.
It's been nice knowing you...
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