One major unsettled issue in climate science indeed is what this sensitivity is, and several threads of information, including the surface temperature history, and water vapor and cloud data argue Lindzen may be correct.

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Using a particle accelerator, he demonstrated that cosmic rays colliding with molecules in the atmosphere can, in fact, cause gaseous water vapor to condense into cloud-forming droplets.

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An ingenious new laser called Waterlase adds to that the ability to cut through dry teeth and bone by casting a cloud of hot water vapor around the laser's cutting point, a couple of millimeters from the tooth.

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If there had been just one puffy trawler, a little tugboat of a cloud, even so much as a cotton ball of vapor against the blue, he would have hoped.

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