The Panama Canal moves roughly $270 billion dollars worth of cargo annually – it’s the trade route taken by 40% of all US container traffic alone. But the crucial waterway is contending with a crippling drought, worsened by climate change and infrastructure constraints. Water levels are so low that the Panama Canal Authority is restricting the number of ships that can pass through each day. As the line gets longer, shippers are paying to jump the line, or resorting to workarounds.

Bloomberg reporter Peter Millard traveled to Panama to understand how the drought is snarling global shipping and impacting locals. Millard joined the Big Take podcast to share what could solve the canal’s water level issues: from the experimental ideas, to the politically fraught choice to build a new reservoir and flood neighboring lands. There are no easy fixes. But with a traffic jam this big, getting the canal flowing again is becoming more urgent.