There seems to be talk (and even some action done by DARPA) about engineering organisms to terraform Mars, however, current space organizations like NASA clearly do not want to get anything that could survive in space (other than humans) to stay in space for research purposes.
While sending organisms to do terraforming is something that can't be done yet, why is it that major space organizations seem not to care, some even embracing the idea? From their current behavior, I'd think they'd be extremely against it if anything.