When the FIFA World Cup hits North America in June 2026, 48 teams and millions of soccer fans will be traveling to and from venues spread across the United States, Canada and Mexico.

It’s a dramatic expansion – 16 more teams will be playing than in recent years, with a jump from 64 to 104 matches. The tournament is projected to bring in over US$10 billion in revenue. But the expansion will also mean a lot more travel and other activities that contribute to climate change.

The environmental impacts of giant sporting events like the World Cup create a complex paradox for an industry grappling with its future in a warming world.

Sports are undeniably experiencing the effects of climate change. Rising global temperatures are putting athletes’ health at risk during summer heat waves and shortening winter sports seasons. Many of the 2026 World Cup venues often see heat waves in June and early July, when the tournament is scheduled.

There is a divide over how sports should respond.

Some athletes are speaking out for more sustainable choices and have called on lawmakers to take steps to limit climate-warming emissions. At the same time, the sport industry is growing and facing a constant push to increase revenue. The NCAA is also considering expanding its March Madness basketball tournaments from 68 teams currently to as many as 76.

Estimates for the 2026 World Cup show what large tournament expansions can mean for the climate. A report from Scientists for Global........

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