Proceedings of the National Academy of Sciences, Volume 123, Issue 2, January 2026. SignificanceCatSper is an essential ion channel that mediates Ca2+influx during sperm hyperactivation, a vital step for successful fertilization. Defective CatSper channels are associated with male infertility. CatSper oligomerizes to form quadrilinear …
Observations from the Little Bunker
Last updated: January 27, 2026 10:12 PM
Atmospheric CO₂
428.6 ppm
+17.4
ppm/year
Atmospheric CH₄
1940.59 ppb
+-0.24
ppb/year
Global Temperature
+1.48 °C
Peak: +1.73°C
World Population
8.1 billion
+67
million/year