Sky farming, also known as vertical farming, is a proposed agricultural technique that involves growing crops in skyscrapers or high-rises located in urban areas. It aims to address issues related to population growth and limited land availability. Some key benefits of sky farming include saving horizontal land, achieving sustainability through energy efficiency and organic crop growth, and improving food security for growing urban populations. Several concepts and technologies have been proposed for sky farming, including solar greenhouses, aeroponics, grow lights, and ensuring projects are environmentally sustainable. Potential challenges include the high economic costs compared to traditional farming.