A simple projection of the earth’s temperature made by “curve-fitting” to NASA temperature data.
The single exponential curve gives a rough idea of future temperature based primarily on the increases over the past 60 years. It suggests that 2020 is a critical time since at this point the temperature is not only rising, but the rate at which it is rising is increasing. It implies that if we have any time left to bring things under control, it is a very small amount of time.
How small? We should have begun corrective efforts 60 years ago. Each year that has gone by has made it more and more difficult to call a hault. In 1988 James Hansen, one of the leading authorities on climate change, addressed congress and explained the situation.
The second George Bush was presidnet and made an attempt with the United Nations to start the proceess going. The attempt went nowhere. This was an extraordinarily important and likely decisive turning point. Permanent serious damage had already begun, but no significant (in this context windmills and solar were a drop in the bucket) progress was made, namely that power generation and transportation, the heart of the problem, continued to grow in carbon output and continue to grow today. (If I had the strength I would scream those words loudly enough to shatter every window on the planet.) This is stupidity beyond belief and the topic of the next section.