Time Magazine (via Abhi @ Sepia Mutiny)
LA Times (via Indian Writing)
San Francisco Chronicle (via Indian Writing)
It's worth noting that a number of the essays in the new book can be found online for free:
Tsunami 1, Tsunami 2, and Tsunami 3.
"The Ghosts of Mrs. Gandhi" is on Ghosh's own website here.
A version of "No Greater Sorrow" is here.
"The Ghat of the Only World: Agha Shahid Ali in Brooklyn" is at The Nation.
And there may be others, but I don't want to discourage people from buying the book!