Addasiad Cymraeg o Ground Zero, yn adrodd hanes Richard Picciotto, uwch-swyddog tan a achubodd weithwyr o dyrau Canolfan Fasnach y Byd ar 11 Medi 2001 pan drawodd dwy awyren i mewn iddynt. Mae'r testun yn fodd i ysgogi trafodaeth am derfysgaeth; i ddarllenwyr CA2/3. (ACCAC) A Welsh adaptation of Ground Zero, relating the story of Richard Picciotto, a senior fire officer who saved workers from the World Trade Centre on 11 September 2001 when two aeroplanes flew into the centre's twin towers, the text being a source of discussion on terrorism; for KS2/3 readers. (ACCAC)