Post 27

Post your answers in the comments section below.

Question 1
These are the books written by which famous American surgeon, writer and public health researcher?
Complications: A Surgeon's Notes on an Imperfect Science
Better: A Surgeon's Notes on Performance
The Checklist Manifesto: How to Get Things Right
Being Mortal: Medicine and What Matters in the End

Question 2
In observational astronomy, an X ring, also known as an X - Chwolson ring or Chwolson ring, is the deformation of the light from a source (such as a galaxy or star) into a ring through gravitational lensing of the source's light by an object with an extremely large mass (such as another galaxy or a black hole). This occurs when the source, lens, and observer are all aligned. Id X.
Following is the image of the ring.
Question 3
Who is this famous Indian sand artist?


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