1. Editorial

   • Varsha Singh

   Departments 24 April 2021 Pages: 469 - 470

2. Science Smiles

   • Ayan Guha

   Departments 24 April 2021 Pages: 471 - 471

3. Lynn Margulis

   • Varsha Singh

   Departments 24 April 2021 Pages: 475 - 477

4. The Origin of Eukaryotic Cells

   • Varsha Singh

   General Article 24 April 2021 Pages: 479 - 489

5. Drilling Holes Through Balls and Cubes

   • Jaskirat Kaur
   • Jasmeen Lally
   • Jyotirmoy Sarkar

   General Article 24 April 2021 Pages: 491 - 513

6. Ghosh’s Law

   • Rajarshi Ghosh

   General Article 24 April 2021 Pages: 515 - 522

7. Stochastic Energetics and Thermodynamics at Small Scales

   • Sourabh Lahiri
   • Arun M. Jayannavar

   General Article 24 April 2021 Pages: 523 - 536

8. A Ride to Exoplanets

   • Simran Kaur
   • Varinderjit Kaur

   General Article 24 April 2021 Pages: 537 - 550

9. Ecology for Birdwatchers

   • Abdul Urfi

   Classroom 24 April 2021 Pages: 551 - 573

10. On the Rank of a Matrix

    • S. Kesavan

    Classroom 24 April 2021 Pages: 575 - 578

11. Whittaker’s Five Kingdoms of Organisms: Minor Revisions Suggested by Considerations of the Origin of Mitosis

    • Varsha Singh

    Classics 24 April 2021 Pages: 579 - 583

12. Crossing Words with Astronomy

    • Indulekha

    Departments 24 April 2021 Pages: 585 - 586

13. Science Academies’ Refresher Course on Spectroscopic Techniques: New facets in contemporary fields of chemical, material and pharmaceutical sciences

    Information and Announcements 24 April 2021 Pages: 587 - 588

14. Laced moray

    • Sindhu Radhakrishna

    Life Under Water 24 April 2021 Pages: 589 - 589