Perspective

The climate change that we are experiencing today is a result of human beings, and modern humans have been on this planet for ~200,000 years. In comparison, the earth is 4.54 billion years old. Today the earth is warming faster than at any point in 65 million and  atmospheric concentrations of CO2 are at 400 ppm. The last time this happened, humans didn’t even exist. So, we have obviously done a great amount of damage in a short amount of time.

I have come across two resources recently that put our situation in this perspective.

The first is an analogy that late environmentalist David Brower used often. Here it is:

Screen Shot 2013-08-06 at 2.42.57 PM

Sobering, yes?

Here is another graphic representation (this is a conceptual visual only):

Screen Shot 2013-07-24 at 2.54.52 PM
Courtesy of Edwin Tracy, Senior Administrator at the National Renewable Energy Laboratory

I wanted to share these two resource. Good food for thought.

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