If not talk, at least quietly reflect on and conscientiously begin to make personal lifestyle changes, no matter the degree of change. Every little helps!!
The movie begins with a quick lesson on evolution and plunges into the prevailing ill-practices around the globe that are rapidly declining the health and richness of bio-diversity.
Backed up by plenty of evidence and personal experience of the decaying planet, David's witness statement to the world shakes you back to reality.