If the EPA tries hard enough, they’re bound to come up with something, even if they have to go to Mars to get it.
As a scientist, I have always seen science as an attempt to understand the natural world. (Engineering being the application of that understanding to change that world, hopefully for the better).
As for what is, it is, and if we keep honest our chances of recognizing it are far greater. If we do that well, the engineers have a better chance at success in their endeavours.