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On Grist, the Hulk @MRuff221 calls me out for "resting on my laurels.." I can see plenty of ways to criticize my work, but this is not one of them.. : )

"I think it may be time for you to stop resting on your laurels of 25 years and begin talking to some of the leading scientists in renewable energy...."
Michael Tobis's profile photoSteve Smyth's profile photoScott Byer's profile photoGaythia Weis's profile photo
While I don't believe renewables can take over in the optimistic time frame Mr. Ruffalo lays out, I oppose Keystone XL on a much more basic level - it's the wrong answer to a question not asked. It won't provide a large number of permanent jobs, all the risk to the environment is on the US side, and it's about getting oil out of the US and raising gas prices in the Midwest.

With all the (environmental, pricing) risk on the US side, and all the reward going to a Canadian developer, there is no upside to the US for approving KXL. As an investor, I'd take a look and pass it on to some other sucker.
There are plenty of pollution issues with tar sands on the Canadian side and we are refining some of the tar sand material in the US already.   A broader view of what to be opposed to is needed, IMHO.
I also dislike the reasoning. The question is whether it is good or bad on balance for the world. If were good, the US could probably negotiate a share of the value add. But it's a net value subtract, so we can't.
As the debate rages, I can't help but wonder if, in our need to explain and define what's going on with warming, we have overlooked the fact that we're living through the real/true end of the last Great Ice Age.
Who's to say?
We defined it to begin with.
In the 10,000 year realm, recent decades since the so-called Little Ice Age are a drop in the bucket.
Maybe it's our vision ( plus dire economic fear ) that's skewed and Mother Earth is just happily spinning along on her path through the Cosmos...with us aboard for the ride...for now!
+Steve Smyth Science can have quite a bit to say about our current warming and our planet's history.  Living species matter.  Environments have equilibriums and all are more than just "along for the ride".  Humans have more impact than most.  But for sheer impact on the atmosphere, I think that the award would have to go to plants.
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