June 8, 2001

It's impossible to remember everything we read or learn. As psychologist Daniel Schacter explains, there's a reason for this. He talks with Todd about how our brain catalogues information, and retrieves it or forgets it later on. His book is "The Seven Sins Of Memory: How The Mind Forgets And Remembers".

High levels of phosphorus in pig manure can pollute the environment, so biologist John Phillips developed an "Enviropig". Phillips talks with Todd about the animal, and future research.

Technology expert Heather Newman returns to the show to talk with Todd about latest trends in computers and the Internet. She talks about Microsoft XP, new software for instant messaging, and the new web browser called "Opera".