Keeping in mind the enormous stake that panel members ExxonMobil and Shell have in the oil, natural
gas and coal industries, here is a look at the panel's take on why oil and coal have been so difficult to replace by the following alternative energy sources: Natural
gas ExxonMobil favors boosting the U.S.'s consumption of natural
gas, in part, because it produces at least 50 percent
less greenhouse gas per hour when burned
compared with coal, Nazeer Bhore, ExxonMobil senior technology advisor, said during the panel.