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Re: Climate change

Large animals retaining thermal energy is fine in the short term (at some
substantial energy cost). However if the models are correct the changes
occassioned by a collision of the magnitute envisioned at the K/T boundary
would produce a nuclear winter the endured for sevral (if not many) years.
This length of time and the impact on the primary souce of energy for the
food change would have deprived the larger animals of energy replenishment.
  The small animals require relatively much less energy per organism and the
chances for survival through the crisis of the minimal number ofi small
animals to repopulate the species and avoid extinction are far better for the
little guy.

John Ellingson

Just a thought