There's a school where the classroom has no walls. The roof is living — branches interwoven over bamboo beams, solar panels filtering afternoon light into dappled gold. The desks are carved from fallen timber. The holographic displays flicker with star maps and molecular diagrams, projected into open air. The children here learn to read ecosystems like sentences. They track rainfall data as math. They compose music from whale song patterns. They argue about ethics with each other, and sometime