The Nano Secret to Concrete

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• 	Technique vs Material Old Engineer on 02/08/2007 at 10:23 AM
  Posts: 1 Avg Rating:	"Cement manufacture gives rise to carbon-dioxide emissions because it involves burning fuel to heat a powdered mixture of limestone and clay at temperatures of 1,500 ºC." Why not produce it with a non polluting fuel? Blaming the cement for the production technique seems bass akwards, but if you can produce a non sinstered cement, more power to you Rate this comment: (Reply)

• 	Nano Secret Mega Use aluwu on 02/08/2007 at 5:15 PM
  Posts: 5	Great news! It is one of the best nano progress I have heard aside from the over hypes.  By taking advantage of nano level understanding (science/technology) many traditional building materials can be nano-producted or replaced by more green nano-made counterparts to save the earth from various pollutions Rate this comment: (Reply)

• What is the proof that CO2 is responsible for global warming? neovask on 02/16/2007 at 12:22 AM

  Posts: 6

  It is said that "Scientific community generally agrees that CO2 is responsible for global warming". Has science degenerated to such an extent that "generally agreed" hype has begun to pass off as "Scientific facts". Is there any incontrovertible, scientifically validated proof? Has a controlled scientific experiment been conducted ever, anywhere? I've been searching for it for quite some time, but haven't come across any. Can somebody help? Kulwant Sharma India Rate this comment: (Reply)

  • 	Re: What is the proof that CO2 is responsible for global warming? captainhu on 03/12/2007 at 1:48 PM
    Posts: 1	http://www.aip.org/history/climate/co2.htm This will get you started.  No theory is incontrovertible, but the evidence is very strong. Rate this comment: (Reply)

  • Re: What is the proof that CO2 is responsible for global warming? GaryB on 03/15/2007 at 2:10 PM

    Posts: 42 Avg Rating:

    Re> has a controlled study ever been done ... Exactly what are you suggesting?  Duplicating Earth and it's civilizations and running shutting down CO2 emissions in one and measuring the difference in global temperature? Sorry, not all science falls neatly into controlled double blind experiments.  Rather, you can look at a number of interlocking measurements, models etc and come up with a mostly likely consensus but never never achieve definitive proof. The question comes down to rational risk assessment vs cost. Rate this comment: (Reply)

    • Re: What is the proof that CO2 is responsible for global warming? ccttn on 06/11/2007 at 6:06 PM

      Posts: 1

      The Earth is not warming from the outside in.  Oil exploration and extraction has decreased the Earths ability to regulate internal heat.  Simply put, the Earth is a heat engine and fluids found within the Earth such as salt water and oil deposits perform some degree of core radiated heat delay and consequentially some heat dissipation.  We have affected the Earth's internal heat regulating capacity.  The question is how do we compensate for the associated expansion of the Earth's crust? Not the condition of the atmosphere. Rate this comment: (Reply)

      • 	Re: What is the proof that CO2 is responsible for global warming? cretin001 on 09/22/2007 at 12:09 AM
        Posts: 35 Avg Rating:	interesting...now if only the government would spend money on something as important as this, something would actually get done to help the environment Rate this comment: (Reply)