At a park near Canberra, Australia, a series of small white pyramid-shaped boxes are part of a new experiment: Can “frog saunas” help bring back an endangered species?

The green and golden bell frog—an iconic Australian amphibian with a call that sounds like a cross between a power tool and a quacking duck—is already extinct in the area. Like other frog species around the world, it was a victim of a deadly fungus called chytrid that has been killing amphibians for decades. But scientists are reintroducing the vibrant frog with the hope that a design intervention can help it survive.

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