A new report backed by climate scientists and athletes warned Tuesday about the dangers posed by extreme high temperatures at this year's Paris Olympics.

The "Rings of Fire" report — a collaboration between nonprofit Climate Central, academics at Britain's University of Portsmouth and 11 Olympians — said conditions in Paris could be worse than the last Games in Tokyo in 2021.

It warned that "intense heat at the Paris Olympics in July-August 2024 could lead to competitors collapsing and in worst case scenarios dying during the Games."