Sadly, as the threat of climate change worsens, U.S. lawmakers move further away from practical solutions.
Last week, NASA reported that 2010 was the second hottest year on record, capping the warmest decade in modern times. Climate change continues, despite our currently frozen fingers as we clear the windshield of ice and snow (these big snowstorms in fact could be part of the pattern of climate change’s more erratic and severe storm systems).
This news of temperatures continue their upward march is no surprise to climate scientists who’ve measured the atmospheric carbon dioxide that’s a key creator of the greenhouse effect here on Earth. Atmospheric CO2 once measured around 250 parts per million before the industrial revolution. Now, after 160 years of burning fossil fuels on an industrial scale, we’re at 390 ppm, well above the comfort zone of 350 ppm and on our way to levels that could be terribly unhealthy for humans. Scientists have set an upper limit of 450 ppm of CO2, above which is a vast unknown and before which, are a series of tipping points that could render the whole discussion moot.