tleilaxu, I'll tell you a secret - I had a friend who used to work for the army. He told me that the gov't managed to build and successfully send a manned ship to mars. We actually made contact with the indigenous Martians!
However, they were particularly interested in this super-plant with scarlet-orange fronds and a dark brown stalk, called nimmen. We had been seeing seas of the stuff in long-range pictures, but had not known what it was.
Upon taking samples of the stuff, they discovered miraculous properties to human biology - accelerated healing rate, boosting of the immune system, and an energy boost that made ginseng look like a placebo.
When asked about this wonder-plant, they found that the Martians had no use for it whatsoever, because it did nothing for their physiology. It was in fact a plant that they burned off regularly rather than harvested.
When the governemtn astronauts asked if they could take some specimens of this wonder-plant home with them, The martians said yes, but looked at them as if they were daft.
After all, Mars weeds nimmen.