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Global sea ice has reached a record low – should we be worried?
A graph showing global sea ice levels hitting unprecedented lows for this time of year has caused a social media storm. Here’s what you need to know
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A graph showing global sea ice levels hitting unprecedented lows for this time of year has caused a social media storm. Here’s what you need to know
Decks of medieval ships have been revealed in unprecedented detail in exquisitely preserved wrecks, some found as deep as 1 kilometre