Impact of Urban Rooftop Rainwater Harvesting on Water Security in Sana’a, Yemen: Assessing Adaptation Strategies to Water ScarcityImpact of Urban Rooftop Rainwater Harvesting on Water Security in Sana’a, Yemen: Assessing Adaptation Strategies to Water Scarcity. jhs. 2026;5(7):691-716. doi:10.59628/jhs.v5i7.2563