Pablo is a Sustainability Engineer who uses his unique background to answer readers' sustainability-related questions. Pablo is a Sustainability Engineer and VP at ClimateCHECK. He is a graduate of the Presidio School of Management and earned his engineering degree from Cal Poly. 
He answers readers' questions with regards to such technical issues as energy consumption, efficiency, life cycle analysis, and environmental footprints of business. His perspective is that of a seasoned engineer with the added business sense that comes with an MBA in Sustainable Management.
Which is better: Paper or plastic?
And don't forget to throw canvas bags of various types into the mix!
Hey Pablo, Incandescent or flourescent?
I know, the answer is (usually) flourescent, but how long do I need to use a flourescent light before the iginition costs of turning it on are offset by the savings in the lower rate of electricy consumption relative to an incandescent bulb of the same luminosity?
Hola pablo. You know the maglev trains. Right they have no "track friction" but the big problem with going really fast is air friction right. So what about going in a vacuum tunnel. Is this possible and economically viable? How fast could you go?
Axel, That is a good question. I saw an article a few years ago in the IEEE magazine where they talked about a coast-coast maglev train that travels in a vacuum tube. Without air resistance I think there is almost no limit to the speed. Your limiting factor would be how fast your magnetic track segments could switch from off to on in order. I think in the magazine article's scenario the top speed was around 500mph.
Pablo, I browsed through your postings, nice to read! It is great to see that the usage of the MIPS method spreads further. Will keep coming back to the site and have a read.
I read about vacuum maglev trains. You should to.
here's a link
http://faculty.washington.edu/~jbs/itrans/suppes.htm
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