shepard? >> shepard: wendell goler at the white house tonight. as you know energy prices have been rising in recent weeks while traders worry how the violence middle east and others have. today americans have not cut back on the use of gasoline even though some areas have surged above $4 a gallon. that news sent prices even higher today 78 cents in trading to settle above $105 a barrel. that is a high since 2008. new clues tonight about what caused last year's oil spill in the gulf. and there is no concern that it might happen again. according to a government report, a piece of drill pipe kept the blow out preventer from sealing properly so. it could not stop the oil rig explosion. it killed 11 workers. sent more than 200 million gallons gushing into the gulf. one outside expert's reaction, holy smoke. he says this means every blowout preventer could have the same problem. the company that makes the devices says it is working with