Up-to-Date on Climate Change

Here are some notes related to climate change. I have have rechecked or updated these notes since I made them, but they are the best I have here and now:

• World temperatures rose a bit the 1400s and then dropped into the "Little Ice Age" beginning in the 1500s.
• In the 1500s sea levels were higher than they are now.
• Looking at fairly recent world temperatures, it looks as though they last peaked in about 1000 BC.
• Those interested in global temperatures tend to think in geological time.
• What's geological time?
• How do 'experts' take the temperature of the world?
• How do sea levels move up and down in relation to average temperatures?
• What were the average global temperatures in 500 BC, 1100 AD, 1400?
• The slide into our most recent drop in world temperatures lasted for about 100 years from 1500 to 1600.
• Right now, geologically speaking, it looks as though the earth has entered on of the warmest periods in the last 400,000 years.
• The last time average global temperature was as high as it is now may well have been 125,000 years ago.
• The last temperature low was about 21,000 years ago.
• What's a temperature low?
• There are a significant number of good climatologists who see a general warming trend from about 16,000 years ago.
• What is  significant number?
• How do you recognize a good climatologist?
• I got to thinking tat the earth has been on a general cooling trend for the last 350,000 years.
• Does that mean that I should forget about a warming earth?
• I'm gong to get my cooler started this month.
• Children of today may love to see strong evidence that the earth has been on a cooling trend for 4,000,000 years.
• They may be pleased that their is fair evidence that the earth has been in a cooling trend for 60,000,000 years.
• What is strong evidence?
• What is fair evidence?
• What is the evidence?
• In the larger picture, global warming looks like a small blip.
• How well a human may live through a geological blip may be worthy of our attention.
• As you educate me a bit here, I'll pass on what I learn.