Proceedings of the National Academy of Sciences, Volume 122, Issue 25, June 2025. SignificanceThe overall rarity of carbonate deposits on Mars have been interpreted to be the result of acid dissolution. We show that siderite is stable in Mars-relevant fluids from pH 7 to 2 and its alteration to ferric mineralsâsimilar to those recently âŚ
Observations from the Little Bunker
Last updated: August 18, 2025 06:15 PM
Atmospheric COâ
425.4 ppm
+18.4
ppm/year
Atmospheric CHâ
1934.91 ppb
+9.11
ppb/year
Global Temperature
+1.48 °C
Peak: +1.73°C
World Population
8.1 billion
+67
million/year