23 February 2011

Welcome to the Anthropocene

Posted in News, Climate

There’s nothing like looking at a timeline of Earth’s history to remind oneself that, relatively speaking, humans haven’t been around for very long. But while humans have only roamed the planet for a miniscule fraction of the planet’s 4.5 billion year history, geologists and paleontologists have learned an awful lot about different times in the ancient past. They’ve segmented time on Earth according to major events or changes that took place, such as mass extinctions or beginnings of ice ages. These events created periods of time so distinct that the effects can still be seen in layers of rock today. For example, the past 12,000 years of Earth's history are described as the Holocene epoch.

Now, many scientists insist that recent human activity, beginning about 250 years ago, is having such a significant environmental impact on the Earth’s climate, geography, and biological composition that we have actually entered into a new period of geologic time. That means this change to the “age of man” — or the “Anthropocene” epoch — could be distinctly recognizable when future geologists sift through tiered cakes of rock thousands of years from now.

Nobel prize-winning chemist Paul Crutzen brought the idea of the Anthropocene into the scientific spotlight in 2002 (Crutzen is famous for having studied atmospheric chemistry relating to the hole in the ozone layer), but it is not yet an accepted term in geology vernacular. However, in the March 2011 issue of the Philosophical Transactions of the Royal Society A, a group of researchers are attempting to make the case that the profound human-driven impacts on the planet in recent years fit the criteria for a new geological distinction.

In this month’s issue of National Geographic magazine, journalist Elizabeth Kolbert writes about the Anthropocene, and she points out that it is surprising which kinds of human behavior are expected to have the longest-lasting impacts (from a geologic perspective, at least). The skyscrapers, the highways, and the suburban sprawl?

None of these are likely to leave as indelible a mark as the increasing concentration of carbon dioxide in the atmosphere, which is causing global climate change, sea level rise, and ocean acidification. And though deforestation is rapidly transforming vast swaths of the planet’s landscape today, Kolbert points out that the most serious and noticeable consequence of this in the future could be a mass extinction event caused by the clear-cut. It may be thousands of years before our particular era can be truly verified as a new epoch, but scientists say the measurable transformations that are happening now are so rapid and distinct they make this time a good candidate for a name change. And if nothing else, some say that adopting the Anthropocene name will raise awareness of the fact that humans are having enduring affect on the planet.

If you can’t fathom parsing through the 13 peer-reviewed journal articles in Philosophical Transcations A, Kolbert’s take on the Anthropocene is certainly a worthwhile read.

Climate Central

Comments (4)

  • Cassie

    Cassie

    24 May 2012 at 05:58 |
    Times are changing for the bteter if I can get this online!
  • Mugappa

    Mugappa

    09 April 2012 at 19:34 |
    Everybody, do you think that we can go on a diet for our consuming hungry selves? Because changing our habits on where and how much we shop for food and I mean imported food, for clothing that comes from all over the world, for the latest cute and cheap little trinket for the house(have you noticed how much plastic stuff is been made now days for very low price), how we continue to buy toys that are plastic and batteries operated ,batteries that not at all are disposed the right way always, etc ,etc ,etc . all of these consuming madness could help big on reducing global warming.

    Why can things be made in AMERICA once again, is it because is convenient for WALMART and IKEA and the JOHNSON FAMILY PRODUCTS and all the big conglomerates?
    But this behavior is putting us at the risk of not having a planet with the right climate conditions for us as a race to exist and live here for very much longer

    WE NEED TO STOP PEOPLE AND STOP NOW!!!!!
  • James Wilson

    James Wilson

    09 April 2012 at 09:58 |
    WHAT THE HELL IS GOING ON!!??????
    I do not know about you but I am in fear of my life. Not from terrorist, not from war-mongers, not from thevies or murders, but from the idiot policy makers that are a sleep at the wheel. Can they not see that the more they drag fheir feet the sooner there will be no world for us to live on or in. With the recent events happening today, with Japan, China, New Zealand, Haiti, Libya, a tourist bus being hit and turned on its side and 13 people killed, WHAT is this away to stop the population explosion. What about AIDS, Cancer, we are at risk of something coming from somewhere. We as a people will never know what hit us we are walking through live with blinders on and will be broadsided and will never know what hit us.I think, and this is just my opinion, that we should do as the people in Europe do and take to the streets and I mean everyone, take to the streets and start a new revolution, an energy revolution, all of us each and everyone of us should stop working, living, playing, laughing, sleeping, walking and driving and take to the streets. They so this in Europe and more often than not they get their point across and changes things. They are no different that us they are human beings just like us. TAKE a stand do more than this, I do not know what but it is time for the entire human race to do something be for it is too late and we have no Earth, clean air, clean water, clean soil for growing food, and NO FOOD!
    Like I stated ealier, this is just my opinion, but I think I want to live a little longer with clean air, water, soil, and food.

    James Wilson
  • Ahmed

    Ahmed

    08 April 2012 at 10:38 |
    WHAT THE HELL IS GOING ON!!?????? I do not know about you but I am in fear of my life. Not from terrorist, not from war-mongers, not from tehvies or murders, but from the idiot policy makers that are a sleep at the wheel.

    Can they not see that the more they drag fheir feet the sooner there will be no world for us to live on or in. With the recent events happening today, with Japan, China, New Zealand, Haiti, Libya, a tourist bus being hit and turned on its side and 13 people killed, WHAT is this away to stop the population explosion.

    What about AIDS, Cancer, we are at risk of something coming from somewhere. We as a people will never know what hit us we are walking through live with blinders on and will be broadsided and will never know what hit us. I think, and this is just my opinion, that we should do as the people in Europe do and take to the streets and I mean everyone, take to the streets and start a new revolution, an energy revolution, all of us each and everyone of us should stop working, living, playing, laughing, sleeping, walking and driving and take to the streets.

    They so this in Europe and more often than not they get their point across and changes things. They are no different that us they are human beings just like us.

    TAKE a stand do more than this, I do not know what but it is time for the entire human race to do something be for it is too late and we have no Earth, clean air, clean water, clean soil for growing food, and NO FOOD!
    Like I stated ealier, this is just my opinion, but I think I want to live a little longer with clean air, water, soil, and food.

    James Wilson

Leave a comment

You are commenting as guest. Optional login below.