It continues, but beyond bombing campaigns and chemical warfare, Washington also experimented with another weapon: the weather itself. As part of a secret program known as Project Popeye, the U.S. military attempted to manipulate rainfall over Vietnam and neighboring countries by releasing chemicals, including silver iodide, into the clouds. The goal was to prolong monsoon conditions, flood supply routes, and disrupt the Ho Chi Minh Trail, a vital logistical network supporting the Vietnamese resistance forces. The operation remained classified until investigative journalists exposed it in the early 1970s, revealing how the U.S. military turned environmental manipulation into an instrument of warfare. More than half a century later, the debate over environmental control has taken on a new dimension. Proposals for large-scale solar geoengineering, designed to reflect sunlight and cool the Earth, have reignited concerns over who will manage to manipulate the Earth's climate, who benefits, and who bears the risks.