Rabbi Hadar Margolin- Born in the USA, 1962 at age 19 moved to Israel. Taught in Ma’arava for 10 years, in American seminaries (Michlala, Darchei Binah, Machon Ra’aya) over 20 years. Currently head of Kollel Hora’ah – Ramat Eshkol under Rav Leib Kelemen (+ teaching in seminaries). Authored “Living Simcha”, “The Lulav and Esrog Handbook” (Artscroll), + a few Sefarim in Hebrew.