A wooden water tower, a nature reserve, and a microlibrary made from recycled ice cream tubs are some of the projects on the shortlist for the Aga Khan Award for Architecture 2019. Awarded triennially, the winner must demonstrate that it improves the overall quality of life for the people who use it. Many of the shortlisted projects have strong social justice or sustainability aspects including Arturio Vittori's Warka Water project in Ethiopia, which is bringing sustainable and clean drinking water to remote areas. The Italian architect developed a system of bamboo poles and mesh netting that harvests water from the air. The Taman Bima Microlibrary by Shau Architects is a prototype for a series of small libraries the practice plans to build across Indonesia to combat illiteracy. Each library uses 2,000 recycled ice cream tubs to form a perforated facade.