Heinz R. Pagels

When you write your first book aged 25 or so, you have 25 years of experience, albeit much of it juvenile experience. The second book comes after an extra year sitting in bookshops. Pretty soon, you begin to run on empty.

I don't read a lot of magazines, but when I'm traveling, I'll pick up a copy of 'Vanity Fair' to read on the plane - it's like a full meal! The articles are so good, especially the crime stories. Browsing the Web is more like snacking - but I live on snacks.

In 1967, the world health community launched a global effort to eradicate smallpox. It took a coordinated, worldwide effort, required the commitment of every government, and cost $130 million dollars. By 1977, smallpox had disappeared.