A visibly angry Greta Thunberg berated world leaders at a UN climate summit on Monday, accusing them of betraying her generation by failing to tackle greenhouse gas emissions and asking "How dare you?"
The impassioned speech set the tone for the meeting, called by UN chief Antonio Guterres to reinvigorate the faltering Paris agreement, which 66 countries have responded to with vows to achieve carbon neutrality by 2050.
It comes as mankind is releasing more emissions into the atmosphere than at any point in history, triggering global weather hazards from heat waves to intense hurricanes to raging wildfires and rapidly acidifying oceans.
