If somehow you were able to gain all this knowledge on only one of these subjects which would you choose?
Choosing Mars would answer things like: Is/was there ever life there, terraforming methods, ways to achieve sustainable colonization, etc.
Choosing the ocean floor would lead to: possible cures for diseases, discovery of new organisms, answers to the theory of Atlantis, etc.
Which would you choose?

Topics: space, oceanography, Mars, planets, bottom of the ocean