My son thinks Mermaids (actually fill in the blank with Nessie, Big Foot and/or Aliens) are real. Television is not doing me any favors as far as teaching critical thinking and zoology. While a branch of the US government (NOAA) has declared that there is no evidence for the existence of Mermaids my son (age 15) actually thinks that the government is hiding them (presumably along with ET at Area 51). How can one counter something presented on TV (Animal Planet I think)? It carries a great deal of weight with the younger set. Any advice appreciated!