Proceedings of the National Academy of Sciences, Volume 122, Issue 35, September 2025. SignificanceActivin receptor-like kinase-2 interacts with two different classes of transforming growth factor β ligands: the Bone Morphogenetic Proteins (BMPs) and the activins. With BMP ligands, ALK2 signals to play roles in bone modeling, while with …
Observations from the Little Bunker
Last updated: October 16, 2025 04:11 AM
Atmospheric COâ‚‚
424.4 ppm
+18.2
ppm/year
Atmospheric CHâ‚„
1933.54 ppb
+12.29
ppb/year
Global Temperature
+1.48 °C
Peak: +1.73°C
World Population
8.1 billion
+67
million/year