« Google the Future | Main | Japan Sends In Robots »

April 18, 2011

Looking Back to the Future

Earlier today I pointed to an amusing web comic that mapped the future based on Google search results. But serious folks are looking into the future by studying the past. Atmospheric carbon is currently sitting at around 390 parts per million and creeping up toward the 400 benchmark. The last time it was that high was

around 3 million years ago, during the Pliocene. Back then, CO2 levels remained at around 365 to 410 ppm for thousands of years. Consequently, the Pliocene gives us vital clues of the long-term effects of raised CO2 levels. New research has just been published that examines this period and confirms previous findings that the Pliocene was dramatically warmer than current temperatures.

Back then, sea levels were about 25 meters higher than where they are at right now. Click here for more on the Pliocene period and links to the scientific research that's backing it up.

-- Brian Foley


TrackBack URL for this entry:

Listed below are links to weblogs that reference Looking Back to the Future:

User comments or postings reflect the opinions of the responsible contributor only, and do not reflect the viewpoint of the Sierra Club. The Sierra Club does not endorse or guarantee the accuracy of any posting. The Sierra Club accepts no obligation to review every posting, but reserves the right (but not the obligation) to delete postings that may be considered offensive, illegal or inappropriate.

Up to Top

Find us on Facebook Follow us on Twitter Rss Feed

Sierra Club Main | Contact Us | Terms and Conditions of Use | Privacy Policy/Your California Privacy Rights | Website Help

Sierra Club® and "Explore, enjoy and protect the planet"® are registered trademarks of the Sierra Club. © 2013 Sierra Club.
The Sierra Club Seal is a registered copyright, service mark, and trademark of the Sierra Club.