pp 1349-1351 December 2019 Editorial

Editorial

pp 1354-1354 December 2019 Science Smiles

Science Smiles

pp 1355-1373 December 2019 General Article

Science Versus Ideology: The Contribution and Martyrdom of Nikolai Vavilov

Sujata Deshpande

pp 1375-1380 December 2019 General Article

Nobel Prize in Physiology or Medicine 2019

Mamatha M Reddy

pp 1381-1395 December 2019 General Article

Nobel Prize in Chemistry 2019

A Ramanan

pp 1397-1411 December 2019 General Article

Nobel Prize in Physics 2019

Dhruba J Saikia

pp 1413-1426 December 2019 Series Article

How to Design Experiments in Animal Behaviour∗ 9. Why Do Wasps Fight? Part 1

Raghavendra Gadagkar

pp 1427-1438 December 2019 Series Article

Megaprojects: 2 Facility for Antiproton and Ion Research: Universe in the Laboratory

Subhasis Chattopadhyay R K Bhandari Paolo Giubellino

pp 1439-1443 December 2019 Classroom

Unscientific Determination of Fermi Energy of Copper by Heating and/or Cooling a Copper Wire

Chetan Kotabage A C Abhyankar

pp 1445-1469 December 2019 Classroom

Burning Ropes to Measure Time

Jyotirmoy Sarkar

pp 1471-1474 December 2019 Book Review

Illuminating the Code Reader

Mahak Sharma

pp 1475-1521 December 2019 Classics

The Law of Homologous Series in Variation by Nikolai Vavilov

N I Vavilov

pp 1523-1523 December 2019 Erratum

Erratum

pp 1525-1525 December 2019 Information and Announcements

Resonance@25 - Science Workshop

pp 1527-1527 December 2019 Birds in the Backyard

Black redstart (Phoenicurus ochruros)