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Trivia question of the day — Jan 13, 2026

Tuesday, January 13, 2026. Tap Show answer for the answer, explanation and source.

QUESTION OF THE DAYTUE 13 JAN
DIFFICULTY 33 · MEDIUMIMPACTS OF CLIMATE CHANGE

What term describes ground frozen for at least two consecutive years, which releases carbon as it thaws?

  1. Tundra
  2. Glacier
  3. Ice Sheet
  4. Permafrost
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Answer

D. Permafrost

Permafrost is ground that stays at or below 0 °C for at least two consecutive years; the oldest known permafrost has been frozen around 700,000 years, and thawing lets microbes release carbon locked up since the ice ages.

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