Silicon Investor (SI) -- The First Internet Community

STOCKTALK

We've detected that you're using an ad content blocking browser plug-in or feature. Ads provide a critical source of revenue to the continued operation of Silicon Investor. We ask that you disable ad blocking while on Silicon Investor in the best interests of our community. If you are not using an ad blocker but are still receiving this message, make sure your browser's tracking protection is set to the 'standard' level.

Politics : View from the Center and Left -- Ignore unavailable to you. Want to Upgrade?

To: Cogito who wrote (62992)	5/2/2008 2:23:43 PM
From: TimF	Read Replies (1) \| Respond to of 541946

What your time frame requirement for an energy source to be considered sustainable?

To: Cogito who wrote (62992)	5/2/2008 2:29:06 PM
From: Lane3	Read Replies (1) \| Respond to of 541946

My grandmother lived that long. Your grandmother lived to see enormous changes in technology, lived long enough to go through several mind-boggling paradigm shifts. And the paradigms are coming along even faster now and into the future. Edit: BTW, hope you follow in your grandmother's footsteps.

To: Cogito who wrote (62992)	5/2/2008 3:09:53 PM
From: Sam	Read Replies (1) \| Respond to of 541946

>>Coal is sustainable. We have coal stores out the wazoo.<< Karen - Our supply is finite. Thus, coal is not sustainable. Even if coal would "last" for several hundred years, it still is not sustainable unless we have a way to remove the CO2 emissions. The environment won't remain in a habitable condition for hundreds of years if we (and others like China and India) keep burning coal like we have been doing over the past decade. Some scientists--notably Jim Hansen, who has been studying this problem for over 2 decades now, think we may have already reached a tipping point where the positive feedbacks will overwhelm us in the lifetimes of some people already alive--perhaps many people already alive, no one can really be sure. To many unknowns, both unknown unknowns and known unknowns--the latter includes just how quickly the polar ice sheets will melt; last summer, they melted as much as the best guess of the IPCC consensus thought they would melt by 2035 or so--it is all happening much more quickly than the conservative IPCC consensus view suggested just last year.