One in seven councils in England are "inadequate" at caring for some of the most vulnerable children in society, a report has found.
The standard of child protection at 20 of England's 152 local authorities is "unacceptably poor", Ofsted has warned.
Only one in four local authorities are judged to be "good" at safeguarding children, a new report by the watchdog has concluded.
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Temperatures will remain close to freezing.
The prime minister's announcement came as international leaders gather in Paris on the second anniversary of the climate change plan.
Prime Minister Theresa May said in October the Government will shift towards an organ donation system in England which presumes consent.