1. Editorial

   • Amitabh Joshi

   Departments Pages: 1 - 1

2. Howard Martin Temin — Co-discoverer of reverse Biological information flow

   • S. Mahadevan

   Departments Pages: 2 - 3

3. The study of butterflies

   • Peter Smetacek

   Series Article Pages: 6 - 14

4. Ferroic materials: A primer

   • V. K. Wadhawan

   General Article Pages: 15 - 24

5. DNA vaccines

   • P. N. Rangarajan

   General Article Pages: 25 - 34

6. Mobile agents

   • Parineeth M. Reddy

   General Article Pages: 35 - 43

7. Refresher Course in mathematics (coding theory, cryptography and discrete mathematics)

   Departments Pages: 43 - 43

8. Photoresists for microlithography

   • Debmalya Roy
   • P. K. Basu
   • S. V. Eswaran

   General Article Pages: 44 - 53

9. Web caching

   • Harsha Srinath
   • Shiva Shankar Ramanna

   General Article Pages: 54 - 62

10. Nature watch

    • N. Gopukumar
    • J. Balasingh

    Feature Article Pages: 63 - 67

11. The Magnetohydrodynamic Generator A Physics Olympiad problem (2001)

    • Vijay A. Singh
    • Manish Kapoor

    Classroom Pages: 68 - 75

12. Autocatalysis — A misnomer?

    • P. K. Das
    • E. Arunan

    Classroom Pages: 76 - 79

13. Minimum time of travel

    • S. N. Maitra

    Classroom Pages: 80 - 83

14. Symmetry on a sphere

    • J. Makesh Pravin

    Classroom Pages: 84 - 88

15. A problem in number theory

    • M. N. Deshpande

    Departments Pages: 89 - 91

16. A geometric dissection problem

    Departments Pages: 91 - 91

17. Refresher Course in Immunology

    Information and Announcements Pages: 92 - 92