SECRET issues in Japan will experience close encounters in the form of toilet tissue. Officials in Tachikawa, west of Tokyo, report they are recycling tonnes of top secret documents with a state-of-the-art shredder. It tears up the paper into shreds without destroying the fibre, but not to worry: the shreds won't be large enough to reveal classified information. City officials say they hope to churn out 440,000 rolls of toilet paper annually from state secrets because "toilet paper is very close to everyone. It's a good material to get people to think about recycling."