Water, long taken for granted beneath American suburbs, has become the invisible wall halting growth across the drought-stricken Southwest. Kubota, a Japanese infrastructure firm, is acquiring AirJoule's atmospheric water harvesting technology — machines that draw drinking water directly from the air — to help developers in California and Texas satisfy the long-term water supply guarantees now required before a single foundation can be poured. It is a quiet but consequential pivot: when ancient aquifers fail and rivers run short, civilization turns its eyes upward, to the moisture held in the