From Laurence Williams
Fred Pearce states: “Old oil and gas fields stored hydrocarbons for millions of years. The same could be done for carbon dioxide from power stations” (30 April, p 26). This is wrong. Some fields have lasted for many years but an unknown number leaked away in the past and are some are leaking today. Colonel Drake drilled his first oil well in eastern Pennsylvania at a place where oil was simply leaking out of the ground. California and Iraq have tar pits that resulted from the surface exposure of oil deposits. I suspect there are many others. The idea of sequestering CO2 is a dreadful notion.
Alliance, Ohio, US
