A trucker, a farmer, and an entrepreneur walk into a global supply shock

What It Covers

The US-Israel-Iran war triggers cascading supply shocks across the American economy, with diesel prices up 33%, fertilizer costs spiking, and polyethylene rising 30%, examined through a trucker, Iowa corn farmer, and plastics entrepreneur.

Key Questions Answered

• •Fuel cost transmission: Diesel prices rose roughly 33% in the month following the war's start, pushing semi-truck fill-up costs hundreds of dollars higher. Trucking companies respond by restricting which stations drivers can use, a measurable early signal of cost-management pressure before broader consumer price increases hit.
• •Fertilizer market vulnerability: Nitrogen fertilizer, corn farming's single largest expense, is priced globally despite US natural gas exports. The Persian Gulf supplies 20% of global LNG, so regional conflict raises North American fertilizer costs regardless of domestic production levels, leaving farmers like Iowa's Mark Mueller with no affordable substitutes.
• •Consolidation amplifies shocks: The US fertilizer industry has contracted from roughly 20 companies to four over recent decades. Reduced competition means farmers face near-captive pricing during supply shocks, with some Iowa farmers already receiving warnings from lenders about loan viability due to rising input costs.
• •Substitution as adaptation: UBQ Materials produces a plastic alternative from household waste — food scraps, mixed plastics, dirty cardboard — already priced below conventional polyethylene. A 30% spike in plastic costs makes bio-waste materials significantly more competitive, illustrating how sustained price shocks accelerate adoption of alternatives that previously struggled on cost alone.