In March of 2019, scientists reported a somber discovery.

After compiling data taken from all over the world, the researchers found that killer fungi known as chytrid had caused declines in at least 501 species of amphibian. Worse still, 90 of the species affected had been wiped out entirely—driven extinct or to population levels so low that scientists can no longer find any trace that they still exist. Chytrid was even described as the “most destructive pathogen” to biodiversity ever.

The team, which included 41 scientists, published its findings in the journal Science. The news garnered headlines across the media, including National Geographic.

But today, another group of scientists has called those findings into question. In what’s known in the