Greta Thunberg condemns world leaders in emotional speech at UN

• Thunberg, 16, says governments have betrayed young people
• 'You are not mature enough to tell it like it is. You are failing us'

Greta Thunberg has excoriated world leaders for their "betrayal" of young people through their inertia over the climate crisis at a United Nations summit that failed to deliver ambitious new commitments to address dangerous global heating.

Related: If world leaders choose to fail us, my generation will never forgive them | Greta Thunberg