UNITED NATIONS, United States (AFP) — Some 60 world leaders convene on Monday for a UN summit on “climate emergency” aimed at reinvigorating the faltering Paris agreement, at a time when mankind is releasing more greenhouse gases into the atmosphere than at any time in history.

From heat waves to slow-crawling hurricanes to rapidly acidifying oceans, the impacts of global warming are being felt more than ever before, yet the gap between carbon reduction targets demanded by scientists to avert catastrophe and actions thus far taken is only widening.

It is within this context that a new, youth-led movement has emerged and re-energized climate activism, symbolized by Swedish teen Greta Thunberg who will take the podium in the morning following a speech by Secretary General Antonio Guterres.

Thunberg along with millions of others around the world rallied on Friday calling for climate justice and for the voices of the younger generations who will be most affected by increasing extreme weather events to be heard.