Title Zeropoint energies, cosmical constant, and supersymmetry Author Warren D. Smith NECI, Princeton NJ 08544 Date: 14 May 2001 Abstract We explain how the ``zero point energies'' of vacuum quantum field modes lead to an immense contradiction called the ``cosmical constant crisis,'' then indicate how ``supersymmetry'' may resolve this crisis harmlessly. All the just-mentioned ideas are 15-70 years old. We then go further and explain why even ``broken'' supersymmetry combined with some additional ideas about ``feedback in a rough background'' should do the job. That is new. Only fairly elementary reasoning is required. Although certainly details remain to be worked out, this appears to allow a resolution of one of the biggest mysteries in physics with the aid of one of the most promising ideas in theoretical physics -- supersymmetry. This is hopefully just the first installment in a series of papers by me (which will appear at random times and in random order) about a new picture of Gravity. This one should be readable independently of the others. Keywords Supersymmetry, cosmical constant crisis, ultra high energy cosmic rays, zeropoint vacuum energies, spectral roughness, quantum chaos, Anderson localization. 17 pages including 2 figures, plus 1 extra figure on an extra page.