- I bottoni di Napoleone
- I cani
- I funghi mangerecci e velenosi dell'Europa media
- I Have Landed
- I raggi di elettricità positiva e le particelle α
- Ice Age
- Icon in Crisis
- Idea Colliders
- Idea Makers
- Illustrative Anecdotes of the Animal Kingdom
- Illustrierte Wochenschrift für Entomologie
- Immunity
- Imperia, narody i społeczeństwa Europy Wschodniej i Środkowej na progu pierwszej wojny światowej
- Impressions and Comments
- Impressions from a Botanical Collection
- Imre Lakatos: Euristica și toleranța metodologică
- In alto e al gelo
- In Pursuit of the Unknown
- In the Shadow of the Moon
- Incroyables Cétacés (Paris - 2008)
- Industrial Progress and Human Economics
- Inra - 50 ans d'un organisme de recherche
- Insect Stories
- Insectivorous Plants
- Inside the Lost Museum
- Institutions du droit mahométan relatives à la guerre sainte
- Instruments of Reduction
- Intelligent Design Explains
- Introduction to Astronomy
- Introduction à l'étude de la médecine expérimentale
- Introduction à l'étude de la paléontologie stratigraphique
- Inventing Chemistry
- Invention: The Master-key to Progress
- Inventores increíblemente poco razonables;
- Is God a Mathematician?
- Is Mars Habitable
- Is Mars habitable? A critical examination of Professor Percival Lowell's book "Mars and its canals,"...
- Is Mars Habitable? A Critical Examination of Professor Percival Lowell's Book "Mars and its Canals,"...
- Isaac Asimov's Guide to Earth and Space
- Isaac Newton
- Isaac Newton on Mathematical Certainty and Method
- Isaac Newton vs. Robert Hooke on the Law of Universal Gravitation
- Island Life
- It All Adds Up
- It's About Time