Brownsville Herald: As the debate over climate change rages, average temperatures in Texas are slowly but steadily rising, according to a report from state climatologist John Nielson-Gammon. Nielson-Gammon, a professor of atmospheric sciences at Texas A&M University, said that each decade since the 1970s average temperatures have crept upward, and record hot summers across parts of the state the last two years are in keeping with the long-term trend. His analysis of computer models and projections for Texas…