Complex sentence: He is an outspoken critic of the world's governments and their handling of global warming and has appeared on a number of national and international radio programs discussing the dwindling natural resources and the wastefulness of modern societies.
Split into simpler sentences: He is an outspoken critic of the world's governments and their handling of global warming. He has appeared on a number of national and international radio programs discussing the dwindling natural resources and the wastefulness of modern societies.