He says international students should know that this can affect them in the future if they try to re-enter the United States.

VOA: special.2009.04.02

Corporal Rist should know. He is one of the thousands of U.S.military personnel that have been injured in the wars in Iraq and Afghanistan.

VOA: standard.2009.08.01

According to Dr.David Crumpacker, a Texas psychiatrist who specializes in the illness, He adds people should know more about the disease so they can recognize its early symptoms "It maybe short term memory problems.

VOA: standard.2009.12.04

But for now,he said, there is work to be done. "Every American affected by this spill should know this: Your government will do whatever it takes for as long as it takes to stop this crisis."

VOA: standard.2010.05.02