On Sunday the Wall Street Journal revealed that the Biden administration’s August 2021 report on the origin of the COVID-19 pandemic has been changed. The change became necessary after the Department of Energy, which runs a network of U.S. laboratories, obtained new intelligence that the virus did indeed come out of a lab.

But the admission from Biden’s Energy Department wasn’t the only big development this week. There was also a far more important breakthrough that has not been reported at all.

Researchers have found evidence that the Wuhan lab was constructing viruses using the same techniques as seen in COVID-19 but resulting in far more dangerous pathogens. These experiments were hidden from the public and only came to light through some ingenious detective work.