Sketch of a Proof of an Intriguing Conjecture of Karola Meszaros and   Alejandro Morales Regarding the Volume of the $D_n$ Analog of the   Chan-Robbins-Yuen Polytope (Or: The Morris-Selberg Constant Term Identity   Strikes Again!)
  Using the Morris-Selberg Constant Term Identity, I sketch a proof of a recent conjecture by Karola Meszaros and Alejandro Morales, that I believe could be easily made fully rigorous by a sufficiently skilled and, sufficiently interested, analyst. This conjecture is an analog to the root system $D_n$ of a conjecture made in 1998 by Clara Chan, the late David P. Robbins, and David Yuen, that I proved immediately after, also using the Morris identity. 
Doron Zeilberger
math.CO