InsideClimate: In response to a petition calling for an investigation of ExxonMobil, Maryland Attorney General Brian E. Frosh said his office will "hold accountable any individuals and corporations who have intentionally contributed" to climate change. Frosh made the strongly worded statement in an email to people who signed an online petition calling on his office and 15 other attorneys general to probe Exxon in connection with the company's history of climate denial. While Frosh didn't say an investigation is...