The Panama Canal, handling roughly 5% of global seaborne trade, experienced severe disruptions in 2023-2024 when historic drought conditions forced authorities to slash daily transits from an average of 36 to as low as 18-24 vessels. This was triggered by critically low water levels in Gatún Lake, the artificial freshwater reservoir essential for operating the canal's locks. Ships faced weeks-long queues, with some rerouting around South America's Cape Horn, adding thousands of miles, higher fuel costs, and significant delays to supply chains. Grain exports from the U.S. Gulf to Asia, LNG shipments, consumer goods, and manufacturing inputs were among the hardest hit, driving up global freight rates and contributing to inflationary pressures. While El Niño played a major amplifying role in the 2023 drought, rapid attribution research concluded such an extreme event would have been unlikely without its influence, and long-term climate projections indicate worsening drying trends in the region under higher emissions scenarios. A 2025 study published in Geophysical Research Letters found that minimum annual lake levels are projected to decline substantially through the 21st century, driven by reduced wet-season rainfall, increasing the frequency of transit restrictions unless adaptation measures or emissions mitigation occur. This event did not occur in isolation. Concurrent disruptions in the Red Sea from geopolitical conflict compounded delays at ports worldwide, exposing how multiple chokepoints in global shipping networks can create nonlinear ripple effects across just-in-time supply chains. UNCTAD analysis highlighted how these overlapping crises reduced port performance and forced shipping companies into costlier routing decisions that persist in elevated insurance and fuel expenses. Beyond immediate economics, the Panama Canal story reveals deeper systemic vulnerabilities: an engineering marvel from 1914 still heavily dependent on seasonal rainfall in an era of climate volatility, with limited buffer against compounding risks like biodiversity loss in the watershed or competing water demands. Infrastructure adaptation proposals, including new reservoirs or water-recycling systems, are underway, yet they underscore a broader truth—globalization has concentrated trade through a handful of critical nodes whose failure cascades into widespread economic fragility. As one analysis noted, without proactive resilience building, similar climate-driven shocks to canals, straits, and ports will become normalized features of the global economy rather than rare anomalies.