The 2026 World Cup in the United States, Canada and Mexico is on track to be the most expensive one ever for match-going fans. The cheapest general sale tickets for the final are four times as expensive as they were for the final in Qatar in 2022, and represent only a small proportion of total seats. We look at the reasons for this surge in prices. Also in this edition: solar power overtakes coal in the US, in spite of Donald Trump's policies.