How does the Bhagavad Gita help humanity at large? Any specific reason for its current worldwide interest?
It is a book that is meant to be a help to realize the eternal spiritual reality within all men and women, along with the humanistic objectives which we have in our Constitution and also those which humanity is seeking in the modern age. That is why this Gita message is spreading now in various parts of the world.
The Bhagavad Gita deals with human problems in a human way. That is why it has a tremendous appeal.
Reference: Universal Message of the Bhagavad Gita Vol. 1 by Swami Ranganathananda (p.9,13)