Carbon Cycle

A new study reveals that bacteria living inside marine fish play a key role in producing calcium carbonate, influencing ocean health and carbon storage. The findings challenge previous assumptions that fish alone handled this process. Researchers from the University of Miami led the work published in PLOS Biology.

January 19, 2026 Reported by AI

Modelling of Earth's ancient carbon cycle reveals that volcanic arcs only became a dominant source of greenhouse gas emissions towards the end of the dinosaur era. This shift occurred around 100 million years ago, driven by the emergence of certain ocean plankton 150 million years prior. Previously, most carbon was released through rifting processes rather than volcanic activity.