By Dino Grandoni, The Washington Post The back-to-back landfalls of two harrowing storms in Texas and in Florida have reignited both the scientific debate over the link between hurricanes and global warming and the political debate over what, if anything, to do to address climate change. So far, the only Republicans willing to engage in either have been moderates or those representing low-lying coastal districts vulnerable to sea-level rise and storm surges.