Do You Know? 1. I plan to become a space scientist and explore Mars. Can one create a miniature Mars at home forr studying it? 2. We were discussing Spiderman recently. Can one actually mix human and spider DNA? 3. I read that over-eating can cause memory impairment in old age. Is this true? 4. Every time I ride a bicycle, this question occurs to me: why are bicycles much more stable in movement than when we try to keep still? 6. Why do we never "feel" our organs? (We feel them only when pressed against something else.) 5. In its later stage of life, when fusion stops and the star gets its carbon core, does all that pressure on the carbon core produce diamonds?