I was just reading that humans have left almost 16000 lbs of junk on mars. The human foot print will go down in history as the garbage race. Altering another plants development, go figure.
Kinda think humans at this point are more of a parasite to our planet and the neighboring planets.
I have a hard time with the fact that we are looking for life in the solar system and we can't get along on our own planet. Makes no sense to me.