Extreme weather warnings issued across the US as more storms are expected; millions also warned of heatwave
Across the world this month, temperatures have accelerated to record-setting levels, an ominous sign in the climate crisis ahead of a gathering El Niño that could potentially propel 2023 to become the hottest year ever recorded.
Preliminary global average temperatures taken so far in June are nearly 1C (1.8F) above levels previously recorded for the same month, going back to 1979.
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