Exxon's great ads

I was watching TV the other night and an inspirational ad about energy came on. In this ad they talked about how innovation has led to extracting natural gas (cleaner fuel) from solid rock. Way cool, no mention of problems or complaints. Then I find that it is paid for by Exxon-Mobil. Aren't they the ones who had the big accident in Pennsylvania? And why no mention of what the process is called---Hydrofracking? This is a process that has been implicated in groundwater pollution all over the country. Drill baby drill. Shows the power of money and media access to control the message.