The planet will not explode or die. It has survived worse than humans and undergone far more dynamic change than anything we will ever be able to inflict. Life will prevail here for a long time.
Humans will not go extinct. Breeding pairs have survived cataclysmic natural events when there was no civilization and little science beyond the production of stone tools and creation of fire. However, I fear we could see the death of several BILLION humans--upwards of 80% of us--before the year 2100. A lot of plant and animal species will go extinct, but humans will live to rue the loss. Read about the coming
http://www.jameslovelock.org/page10.html">100,000 year fever.
Civilization is the thing which is most at risk. Failing infrastructure, frail power grid, widely disbursed suburbs and a dependence on fossil fuels. Civilization clings to and depends upon cheap energy for survival. Expensive oil, coal, or natural gas could push us over the edge.
The collapse and effective disappearance of civilization would cause the developed world to descend a long way. The warlords of Somalia then become the norm across the planet. Will the bodies of one tribe's enemies become dinner to avoid starvation? If so, no one is going to give a damn about habitat, wildlife, and the consumption of resources. The disappearance of first world developed civilization would cause a huge positive feedback, and that's a bad thing.
I think conservation and protecting biodiversity are inexorably intertwined with combating anthropocentric climate change.
Accurate prediction of when we'll hit 2°C rise in temperature isn't nearly as significant as accepting the path we're on--warming.
Smaller species will adapt to climate change more easily. Larger species have never adapted to change very well.
The fossil fuels of oil, coal, and natural gas (read up on fracking if anyone still loves natural gas) are killing us and our planet.
A ninth grade high school teacher, back in 1981, told us that we would eventually start mining our landfills. I was inclined to believe it at the time, and today I'm absolutely convinced we'll have to do it just to preserve and advance certain technology.
Fretting because wind farms, solar, and hydro have an impact on wildlife and habitat is a waste of time. Nothing has zero impact. Yes, better choices can be made through better siting, but maintain perspective at all times. Subsistence hunting destroys wildlife, farming destroys habitat, but these can be and are done responsibly.
Nuclear fission can be scary, but I agree with Dr. James Lovelock that it's the
http://www.jameslovelock.org/page11.html">green solution. It's a necessary mistress with whom we must dance, for decades to come, if we expect civilization to remain.
Geothermal raises my concern level, but I want R&D to proceed.
Rooftop solar ain't cheap, but it's not beyond the means of all save the wealthy. If I had my way I'd double or triple the budget of the NREL if I could get the votes.
Wave, tide, offshore wind, biomass, etc. also need to be pursued. However, just as wind and PVs affect habitat and wildlife, so too will wave and tide.
Wanna make a difference? Read Part II of
Sustainable Energy - without the hot air.
Impatient? Go to
http://www.inference.phy.cam.ac.uk/withouthotair/c19/page_116.shtml">Page 116.
Need it boiled down further?
"... electrify transport ... electrify most heating of air and water in buildings using heat pumps ... get all the green electricity from a mix of four sources: from our own renewables; perhaps from “clean coal;” perhaps from nuclear; and finally, and with great politeness, from other countries’ renewables
."
OCM seems potentially problematic since we're already relying upon OCO.
David J.C. MacKay.
Sustainable Energy - without the hot air.
UIT Cambridge, 2008.
ISBN 978-0-9544529-3-3.
Available free online from www.withouthotair.com
Most days I manage to delude myself into believing all is well, the future is bright, and Dr. Michio Kaku was right when he said he believed we'd go right up to the edge of disaster then pull back in the final moments.
Being the volunteer PTA science club coordinator at my son's elementary school, I do have genuine hope to see kids K through 5 excited about science. I tell myself they will grow up and learn to drive seeing hybrids, plugins and EVs as good things and the future. I tell myself they'll learn conservation, recycling, stewardship of our resources, and practice these without thinking any of it is an imposition. I tell myself the really smart and energetic ones will major in science, some of them will study energy, and at least a few, somewhere out there, are going to become multi-billionaires when they discover or invent something incredibly innovative that ultimately saves civilization and changes the world in a huge way.