Countries on the front lines of the climate crisis are fed up.
During the annual gathering of world leaders at the United Nations this week, low-lying island nation Vanuatu stepped up a fight to get the world to focus on combating global warming by calling for a fossil fuel nonproliferation treaty.
"The time is up — action is required now," Vanuatu's President Nikenike Vurobaravu told the U.N. General Assembly on Friday.