75th anniversary of Auschwitz liberation: Testifying till their last breath

More than 200 survivors of Auschwitz-Birkenau and other Nazi camps are expected to attend the commemorations for the 75th anniversary of the liberation of the largest and most notorious of them all. Now in their 90s, those who remember the horror first hand are determined to keep doing all they can, for as long as they can, to ensure the world never forgets.