NYC march calls for action against climate changePosted: Updated:
More than 100,000 people gathered in Manhattan Sunday to call for action on climate change.
The march is being held ahead of the United Nations General Assembly meeting this week.
Climate change is expected to be a hot topic on the agenda.
The general U.N. session begins Monday and President Obama is expected to be there.
The ISIS threat and the Ebola outbreak will also be discussed.