An estimated 27 million people worldwide are afflicted with Alzheimer's. On Please Explain – find out what Alzheimer's is all about, and whether there are ways to prevent it or slow its progress. Also: a look at what the Savings & Loan crisis can teach us about our current financial problems. A conversation with author Judy Blume. Paul Theroux revisits his journey from London to Tokyo thirty years ago. Plus, join us for updates on the House's vote on the $700 billion bailout bill.