Summarize the text "NDCs announced prior to COP26 make it likely that warming will exceed 1.5°C during the 21st century, while limiting warming to 2°C (>67%) would imply an unprecedented acceleration of mitigation efforts during" IF it answers the question "Can we still reach the 1.5 degree goal?" ELSE say "I don't know" Respond with more than 150 words.
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