vice president al gore, and the actor leonardo gi caprio. christen saloomey reports. >>> this is more than an action, it's a movement. it's led on the front lines by climate change. from coastal communities losing their neighbourhoods, to rising sea levels and extreme weather, to indigenous groups travelling interest the south-west of the united states. >> the delegation that we have brought, we are impacted by development. we have a boom of fracking going on on the reservation. history of uranium mining, and where i work it's cold country. >> we felt the negative impact. we are here to push for a transition. >> plenty of dignitaries on hand, including former vice president and climate activist al gore, and the united nations secretary-general ban ki-moon. ban has convened a climate summit in new york or tuesday. there are efforts under way to reach a binding international agreement by next year. nothing will happen in new york, the u.n. the big action is on the streets. this is a claing christopher gibson movement coming -- climate change m