Jennifer becomes obsessed with the environment after she begins studying the earth's ecological evils. As Alex presents Andrew with a pet parakeet, Jennifer arrives home with news that her science class has begun studying global ecology to explore how the earth is endangered by man's interference. Upset that the world is being destroyed for profit, Jennifer begins trying to make the family more ecologically aware as she laments the destruction of rain forests in Brazil and the ozone layer over the South Pole. While Mallory teaches the parakeet anti-Republican phrases, Jennifer becomes more and more obsessed. When she realizes how many toxic chemicals are in the Keaton home alone, she demands that the family throw out a bunch of household products and shop for safe alternatives. Not stopping there, however, she begins dwelling on the enormity of the world's environmental problems and becomes psychologically overwhelmed. Fixating on such evils as acid rain and radon gas, Jennifer sinks i