Is appropriate to have or use a spa or hot tub where the water is recycled and heated.

why does a married woman have to cover her hair?

dear sir, i am a 27 year old boy living in iran. i have met a muslim girl and i have fallen in love with her. i want to marry her, but as you know it would be impossible to marry a muslim girl without changing having the same religion. i dont want to change mine, is there any other way that i can marry her? please help me as soon as possible, best regards,

Here in Israel I see many tombstones with photographs of the deceaswed.Where does this tradition come from? Is it acceptable in Jewish law? Shabbat Shalom

I am interested in Jewish philosophy. Is Abraham Joshua Heschel's "God In Search Of Man", "kosher"? If not, can you give me any ideas what to read?