Scientists at the American Museum of Natural History are building a 21st
century version of Noah\'s Ark. Except this time, instead of two by two, the
animals will go in little bits and pieces, deep frozen. The tissue specimens - from whole insects to leeches to small pieces of whales - will be a treasure trove for researchers using genetic techniques to study wildlife, and perhaps one day will become the source material for creating clones of endangered or extinct animals.