re:  Change on the way - Latest U.S. global-warming study predicts sweltering future

Once again, the Chronicle is advocating government policies to "reduce man-made greenhouse gas emissions that are heating the globe", predictably using the occasion of current sweltering temperatures as an example of things to come and subtly implying that our current heat wave is itself the result of man-made CO2.  Interesting, then, to note that even as today's high temperature is expected to be above normal for this date, the record high of 103 F occurred in... 1934.

In advocating that "Houstonians should support congressional efforts to craft sensible measures to turn down the heat", the Chronicle continues to ignore a simple but central question:  precisely how much heat would government cap-and-trade proposal lower?  How can a proposal be labeled "sensible" if nobody knows how much benefit will be provided at what cost? 

Sincerely,
Dave Smith
Houston, TX