pp 1-1 July 2002 Editorial

Editorial

Amitabh Joshi

pp 2-3 July 2002 Article-in-a-Box

Howard Martin Temin - Co-discoverer of Reverse Biological Information Flow

S Mahadevan

pp 4-5 July 2002 Table of Contents

Table of Contents

pp 6-14 July 2002 Series Article

The Study of Butterflies - Congregations, Courtship and Migration

Peter Smetacek

pp 15-24 July 2002 General Article

Ferroic Materials: A Primer

V K Wadhawan

pp 25-34 July 2002 General Article

DNA Vaccines

P N Rangarajan

pp 35-43 July 2002 General Article

Mobile Agents - Intelligent Assistants on the Internet

Parineeth M Reddy

pp 44-53 July 2002 General Article

Photoresists for Microlithography - Role of Organic Chemistry in Microelectronics

Debmalya Roy P K Basu S V Eswaran

pp 54-62 July 2002 General Article

Web Caching - A Technique to Speedup Access to Web Contents

Harsha Srinath Shiva Shankar Ramanna

pp 63-67 July 2002 Feature Article

Nature Watch - Tent-making Bats

N Gopukumar J Balasingh

pp 68-75 July 2002 Classroom

The Magnetohydrodynamic Generator A Physics Olympiad Problem (2001)

Vijay A Singh Manish Kapoor

pp 76-79 July 2002 Classroom

Autocatalysis – A Misomer?

Puspendu Kumar Das E Arunan

pp 80-83 July 2002 Classroom

Minimum time of Travel

S N Maitra

pp 84-88 July 2002 Classroom

Symmetry on a Sphere

J Makesh Pravin

pp 89-91 July 2002 Think It Over

A Problem in Number Theory

M N Deshpande

pp 91-91 July 2002 Think It Over

A Geometric Dissection Problem

M N Deshpande

pp 92-92 July 2002 Information and Announcements

Refresher Course in Immunology

pp 95-95 July 2002 Flowering Trees

Delonix regia Raf.

pp 96-96 July 2002 Featured Scientist

Howard Martin Temin (1934-1994)