Lasrick writes: Many legislators regularly deny that there is a scientific consensus, or even broad scientific support, for government action to address climate change. Researchers recently assessed the content of congressional testimony related to either global warming or climate change from 1969 to 2007. For each piece of testimony, they recorded several characteristics about how the testimony discussed climate. For instance, noting whether the testimony indicated that global warming or climate change was happening and whether any climate change was attributable (in part) to anthropogenic sources. The results: Testimony to Congress—even under Republican reign—reflects the scientific consensus that humans are changing our planet's climate.