🏆iF Student Design Award

Holo is a passively cooled habitat that protects urban wildlife during extreme heat. Made from terracotta, it regulates temperature through evaporative cooling, mimicking the inside of a tree hollow. By repurposing air conditioning runoff, Holo surrounds the nesting cavity with water, increasing thermal inertia while providing a water source for local fauna. Testing shows it can lower temperatures by up to 12°C during heatwaves, increasing survivability for nesting species. Unlike standard nest boxes, Holo offers superior thermal regulation and blends seamlessly into cities, making it a sustainable tool for urban wildlife conservation.