1. Chemistry of potentially prebiological natural products

   • Albert Eschenmoser

   OriginalPaper Pages: 389 - 423

2. The phylogeny of trna molecules and the origin of the genetic code

   • Massimo Di Giulio

   OriginalPaper Pages: 425 - 434

3. Self-organization of the Earth's biosphere-geochemical or geophysiological?

   • David W. Schwartzman
   • Steven N. Shore
   • Mark McMenamin

   OriginalPaper Pages: 435 - 450