Biophilic design: satisfying innate human need for nature contact. 14 Patterns of Biophilic Design (Terrapin Bright Green): visual connection to nature, natural light, thermal variability, water presence, biomorphic forms, natural materials, prospect/refuge. Implementation: living walls (Green over Grey, ANS Group), green roofs, atria with trees, daylight harvesting, natural ventilation, water features, wood/stone finishes, fractal patterns. WELL Building Standard: biophilia credits. Productivity impact: 8-11% improvement in offices (Terrapin). Cost: 5-15% premium. Famous: Amazon Spheres, Bosco Verticale Milan, Apple Park.