Could the world become too warm to hold Winter Olympics?

Without drastic reductions in greenhouse gas emissions, climate change threatens future Winter Olympic Games because their locations would be too warm to host the events, a new study has found.

If the world’s high emissions continue on their trajectory, by the 2080s all but one of the 21 cities that previously hosted the Winter Games — Sapporo, Japan — would not be able to do so again.

Six cities would be considered “marginal,” while 14 would be deemed “unreliable” — meaning the right conditions for snow and athlete safety cannot be met.

But that won’t necessarily happen if the world takes drastic action and follows the 2015 Paris Climate Agreement, according to Daniel Scott, the lead researcher for the University of Waterloo’s report. Under that deal, nearly 200 countries agreed to drastically cut their collective greenhouse emissions.

“Under a low-emissions future in the 2050s even the 2080s, we don’t really see much change in terms of those climate reliable locations,” Scott told NPR. “We pretty much keep all of what we have today.”

The report comes just as the world prepares for the 2022 Winter Olympics in Beijing, starting Feb. 4.

Athletes and coaches surveyed by the researchers said they’re already seeing the effect climate change has on their sports.

“Some of the coaches that did the survey have been coaches in the sport for 30 years,” Scott said. “They’ve traveled the world, back to the same competitions, and they’ve seen that certain competitions don’t happen as regularly or uninterrupted as they used to” because of warmer temperatures.