pp 1-2 December 2003 Editorial

Editorial

G Nagendrappa

pp 3-4 December 2003 Article-in-a-Box

The Wright Brothers and their First Flight

O N Ramesh

pp 5-5 December 2003 Article-in-a-Box

The Wright Family

Roddam Narasimha

pp 6-7 December 2003 Table of Contents

Table of Contents

pp 8-17 December 2003 General Article

Geologic and Climatic Puzzle fo the Proterozoic Snowball Earth

P V Sukumaran

pp 18-32 December 2003 General Article

Markov Chain Monte Carlo Methods - Statistical Applications

K B Athreya Mohan Delampady T Krishnan

pp 33-41 December 2003 General Article

Frobenius and His Density Theorem for Primes

B Sury

pp 42-49 December 2003 General Article

RNA Inteference – Towards RNA becoming a Medicine

Subhanjan Mondal

pp 50-60 December 2003 General Article

Powered Hang Gliding

Vidyadhar Y Mudkavi

pp 61-76 December 2003 General Article

How Two Bicyle Mechanics Achieved the World’s First Powered Flight

Roddam Narasimha

pp 77-82 December 2003 Classroom

A Simple and Illustrative Method of Ion-Exchange Chromotography

B Ramachandra Murty

pp 83-91 December 2003 Classroom

Planetary Orbits as Simple Harmonic Motion

Bikram Phookun

pp 92-93 December 2003 Research News

New Insights into Obesity

D D Bansal Ravneet Kaur Boparai

pp 94-98 December 2003 Book Review

How we Invented the Airplane

C S Yogananda

pp 99-114 December 2003 Classics

Some Aeronautical Experiments

Wilbur Wright

pp 117-117 December 2003 Flowering Trees

Terminalia catappa

pp 118-118 December 2003 Featured Scientist

Wilbur Wright (1867-1912)