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Earth Approaching Tipping Point Say Scientists
Hugh Pickens writes "The UC Berkeley News Center reports that a prestigious group of 22 internationally known scientists from around the world is warning that population growth, widespread destruction of natural ecosystems, and climate change may be driving Earth toward an irreversible change in the biosphere, a planet-wide tipping point that would have destructive consequences absent adequate preparation and mitigation. 'It really will be a new world, biologically, at that point,' warns lead author Anthony Barnosky. 'The data suggests that there will be a reduction in biodiversity and severe impacts on much of what we depend on to sustain our quality of life, including, for example, fisheries, agriculture, forest products and clean water. This could happen within just a few generations.' The authors note that studies of small-scale ecosystems show that once 50-90 percent of an area has been altered, the entire ecosystem tips irreversibly into a state far different from the original, in terms of the mix of plant and animal species and their interactions. Humans have already converted about 43 percent of the ice-free land surface of the planet to uses like raising crops and livestock and building cities. This situation typically is accompanied by species extinctions and a loss of biodiversity. 'My view is that humanity is at a crossroads now, where we have to make an active choice,' says Barnosky. 'One choice is to acknowledge these issues and potential consequences and try to guide the future (in a way we want to). The other choice is just to throw up our hands and say, 'Let's just go on as usual and see what happens.'"
Just coincidence? I think not...
"Flyin' in just a sweet place,
Never been known to fail..."
I'm sure we're going to pick Choice B, "throw up our hands and say, 'Let's just go on as usual and see what happens.'" Choice A would require some serious coordinated effort from all the world's industrialized nations, and there's absolutely no way that's ever going to happen.
Thanks for the broad sweeping generalizations, it was highly informative.
“Common sense is not so common.” — Voltaire
Good luck with that. Humans will continue plodding along exactly the same as they always have, until they start dying off suddenly once the reserve is gone and some minor catastrophe or other strikes that is just too much to deal with, pushing everyone over the edge. After all that's how disease happens. You're fine until the day you're not. This will happen because everyone thinks it's someone else's problem. Witness people - not even only lower class uneducated peasants but middle class supposedly educated people - gladly boasting of having 5 or more kids even today. Now consider the undevelopped world parts of which are still growing at rates like 6% (which means doubling in size every 12 years). I'd say a few generations is too generous.
Seven puppies were harmed during the making of this post.
No really, it really IS reaching a tipping point, no matter what your energy company overlords are saying.
If you're so big into peer reviewed research, you might want to scale back your claims there, mate. The scientists in the article are a lot more careful in their claims than you, as we see from this quote, "The authors of the Nature review argue that, although many warning signs are emerging, no one knows how close Earth is to a global tipping point, or if it is inevitable." The world would be a better place if more people were careful in what they asserted,like these scientists.
In other words, don't load up on oil futures just yet.
We don't believe in evoltution. Your phrase implies a faith that is not necessary. We merely understand evolution. For example, we understand that evolution is a biological mechanism, not an all encompassing silver bullet that guarantees survival of the human race regardless of the behavior of the planets inhabitants on a global scale. It is called an ecosystem for a reason, which leads to a need to understand entropy. Note that you don't need to believe in entropy. It is going to happen even if you become best friends with the flying spaghetti monster. The question is, can we dynamically counteract it. Some of us believe we can, and so it matters how we behave. Others don't believe it is necessary to change our behavior as a species, and will keep ignoring any evidence that is contradictory to their comfortable world view.
Guns don't kill people; Physics kills people! - John Lithgow as Dick Solomon on Third Rock From The Sun
The report cites "explosive population growth" [citation needed]
http://en.wikipedia.org/wiki/File:World-Population-1800-2100.png would be a start. For your other claims, maybe actually read TFA?
This is a call for sanity. We need to appreciate, accept, and design for the best and the worst that human beings are prone to and for. The genius of the American form of Government was checks and balances (before greedy self serving people removed them.) We need to understand that there are conflicting interests, belief systems and human enterprises and we need to account for them all.
There must be a sane position between human desire and human need. We need to find and develop that position. We need to evaluate our behavior and our beliefs against hard physical reality and abandon philosophies which are fundamentally bankrupt and ideologies which are inherently self destructive. We can't react our way out of this problem. We need to come together embracing our differences and honoring our distinctiveness. Together we must pick a target, an inspiring and achievable future that serves both the human condition, and the future condition for life on the planet. The problem is not and has never been about life. Life can't be stopped. Its about a world capable of sustaining complex higher lifeforms capable of intelligence. We are an apex species. Destroy the habitat and our numbers will collapse (its happened before, at one time the human population dwindled to less than 5,000.)
That said, we must not let the Plutarchs push the vast majority of humanity off the edge. There is clear indication that education is transformative. Bring knowledge to superstition, starvation, plague and famine, and life improves instantly. Where there is education the natural environment is seen as a value outside of its ability to be burned or eaten. Where there is education, there is social change, contraception, medicine, increased health and lifespan and decreased reproduction rate. We need to educate the developing world and we have amazing new tools to accomplish this. We need to remove the false gods and dangerous superstitions from our midst. Starting with Profit and Endless Material want. Its time to discover what is good for us as human beings and pursue that with passion and joy. It is time for us to honor the miracle of our world and protect it, because until we can leave it, it is the only home we know and we are unfit for any place else. It is time for us to appreciate the miracle of being human and put an end to strife and hatred, fear and war, xenophobia and discrimination.
This is a call for sanity.
"Instant access to this article: $32" I'd say were doomed.
I see people driving dangerously all the time and I realize the driver is thinking "Hey, I've done this hundreds of times before and it's never been a problem." And they're right. Until the one time they're not right. Then it's too late. I don't think getting away with something many times is an excuse to keep doing it. People die that way every day.
What a fool believes, he sees, no wise man has the power to reason away.
I'm making the humanitarian sacrifice and choosing not to mate... yeah, choosing, that's it.
Everything will correct itself. Once things get real bad, there will be large scale fighting which will kill off a fairly significant number of people which should bring us to the balance needed. Nature is self-correcting after all.
Maybe, but then again you may not like the results from nature correcting itself.
Curious, one person replied to the graph claiming that it looks like it is leveling off (correctly noting that the rate of growth is expected to slow down) and someone else then claims the graph is somehow maniuplated. So could you explain what is manipulated in this graph? It isn't using a wonky time scale or a wonky population scale. The most common trick of this sort is to cut off the base and essentially start the y value at some higher level, but that's not the case here. It is also possible to cut off early data (say if one wanted to hide large scale fluctuations) but if you include data before 1800 the prior time looks pretty similar. So that's not. You can't just dismiss any graph as bad just because it is possible to make graphs look bad. It is a reason to actually look carefully at graphs, and if there's no problem with it, actually pay attention to it.
What no? That's only a sign that growth is less than exponential, which shouldn't be surprising at all. That doesn't mean the growth rate is half as fast. Say for example you started with the function f(t)=t^2 and looked at starting at t=1. To double f the first time one needs to go to about 1.4. To again double f one needs to go 2, to double again one needs to go to about 3.8. Here the growth rate is increasing, but the doubling time is also increasing. This is a common pattern for functions which grow more slowly than exponential.
No other solution.
"If any question why we died, Tell them because our fathers lied."
Albert Bartlett's anaysis is miguided because he ignores that while problems can grow exponentially, so can solutions, especially when you have a lot of people to think them up and implement them. Julian Simon's take on things in "[The human imagination as] The Ultimate Resource" was much better in that regard. That's one reason aluminum used to cost more than gold, but now it is so cheap we throw it away. Soon we will have dirt-cheap solar panels and maybe even hot and cold fusion power, all thanks to all those "too many" people using too much stuff that people like Bartlett or William Catton might just as soon be rid of because they use resources and make places crowded, ignoring that people also produce resources and make places worth being in. Same for robotics, 3D printing, and someday self-replicating space habitats. The solar system may have limits to growth, but we are nowhere near them. Carrying capacity is a function of both lifestyle and technology, both of which are affected by imagination.
The main problem humanity faces right now is more the other direction -- highly educated and affluent people tend to stop breeding; you can see that in the demographics. Having so many modern distractions just makes the Peak Population crisis problem worse due to "The Pleasure Trap" of "Supernormal Stimuli". Contributing to that is also a scarcity mythology, made very dangerous because people will then ironically fight over perceived scarcity with the technologies of abundance like nuclear power, rocket ships, robotics, and nanotechnology...
A 21st century issue: the irony of technologies of abundance in the hands of those still thinking in terms of scarcity.
It certainly is peer reviewed. You can see Peter Norvig's analysis of the research. You're just making shit up.
What a fool believes, he sees, no wise man has the power to reason away.
It's mankind. The Earth couldn't care less.
The positive feedback loop of a previously sequestered source of greenhouse gas causing yet more release of same.
The mass die off in the seas of the base of the food chain and the sudden follow on of all other species that depend no that food chain.
The outbreak of nuclear or biological war as a result of governments toppling under food and or water scarcity pressures.
The breakdown of civil order owing to the bankrupting of nearly all nations in a now-too-late, and ultimately futile effort to avert climate change. A tipping point is reached regarding the human acceptance of climate change and all it entails, including any and all of the above. Just as in the stock market, the full event doesn't even have to happen before the force of the disaster is felt - that happens as soon as a tipping-point consensus understanding of what is inevitable takes hold amongst observers.
It's not too late now, or at least , it's not certain it's too late now.
By the time the symptoms become indisputable, then.. then it will really be too late.
The Princeton Stabilization Wedges concept. An idea we can all benefit from, however you feel today about the certainty of climate change:
http://cmi.princeton.edu/wedges/
The relativity of wrong - Asimov
And did you exchange a walk on part in the war for a lead role in a cage? - Pink Floyd.
That lack of change is normal, desirable, or even possible.
Since they start with these proven untrue postulates, the whole thing is a worthless mental exercise in what things might be if things weren't as they are.
Help stamp out iliturcy.
Species around less than a million years thinks it will be around forever. LOL.
Ignoring them? We very successfully mitigated the acid rain problem, water pollution problems and dioxine pollution problems of the 70s and 80s. In my youth, forests were full of dead trees and swimming in large rivers was a big no-no. Nowadays forests are back to being green and nearly all surface water is ok to swim in again.
In the mean time China is rather successfully countering the growth of its population, Germany recently ran a full day on 50% solar power, other countries are producing their energy by durable means with an ever increasing pace, water desalination is slowly replacing natural sources, cars are getting more efficient every day, recycling is quickly becoming a profitable industry and in some countries forested area is actually increasing.
We're slowly but steadily steering to towards the right path, partially because it is economically sound, partially by not ignoring scientific predictions of apocalyptic scenarios. If we successfully counteract the massive deforestation going on in rainforests, there's actually a chance of humanity getting on a sustainable track before it really is too late.
0x or or snor perron?!