Did the homes in the ghetto require a mezuzah?

May one use electric lights as Shabbos candles in the ghetto?

With regards to a first-born son with an absent father, who may perform the mitzvah of pidyon haben, redeeming the first-born son? 

A young man raised in an assimilated home wishes to undergo a circumcision in the Kovno ghetto. Can a nonreligious doctor perform this procedure? This is a question which applies even today with regards to many men who have had circumcisions performed by either non Jewish doctors or nonreligious mohels. Here is Rabbi Oshry's response. 

Should someone in the ghetto  recite the special blessing of HaGomel, which is said when saved from a dangerous situation, when they are spared from being rounded up by the Nazis? 

Can someone in the ghetto commit suicide to avoid having to witness the murder of his family? A heartbreaking question, a dubious source, and a not-so-simple answer. 

Is it better to perform hard labor or transgress the Sabbath by cooking? And can someone eat the food cooked on the Sabbath? 

Can the clothes of martyred Jews be used by someone else? Rabbi Oshry responds.