Sentences with phrase «other observational campaigns»
But dozens of other observational campaigns have failed to spot any plume.
http://science.sciencemag.org/ Not exact matches
The notion that CO2 is such a driver of climate that the projected growth in ambient levels carries the threat of probable catastrophe is so feeble, so lacking in observational and, indeed, theoretical support that we need other ways to understand the motivations of those who campaign so intemperately against this vital chemical.