The phrase "human fingerprint" refers to the unique marks or signs that humans leave behind on something. It symbolizes the impact or influence we have on the world, showing that we have affected or changed it in some way. Full definition
The coat patterns are so characteristic, almost like human fingerprints, and you can identify an animal without any doubt. (scientificamerican.com)
While the report failed to find human fingerprints on the cold weather, that doesn't raise questions about the broader role that people are having on the globe, he said. (scientificamerican.com)
It turns out that the observed global warming has a distinct human fingerprint on it. (skepticalscience.com)