We have been considering a study on alternative frac fluids such as propane. One idea we are currently taking a closer look at is the use of compressed CO2. The use of CO2 for enhanced oil recovery is not new, but using CO2 as a direct alternative frac fluid to water for natural gas wells is new along with the added potential of sequestering CO2 depending on how much of the gas displaces methane and stays downhole. Do you have some specific interest in this area?