Nightly News Full Broadcast – Dec. 25 
A series of climate records on temperature, ocean heat, and Antarctic sea ice have alarmed some scientists who have said their speed and timing is unprecedented.
Dangerous heatwaves in Europe could break further records, the UN has said.
It is hard to immediately link these events to climate change because weather – and oceans – are so complex.
Studies are underway, but scientists already fear some worst-case scenarios are unfolding.
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