Synopsis: Imatra steel mill has significantly upgraded its bloom furnace, cutting CO₂ emissions by about 25% and reducing natural gas use. This modernization, p ...

More information: Hawco, Nicholas J., Anthropogenic iron alters the spring phytoplankton bloom in the North Pacific transition zone, Proceedings of the National Academy of Sciences (2025). DOI: 10 ...

Water quality quickly improved, dead zones shrank, and harmful algal blooms became less frequent. But the scourges of low-oxygen waters and sometimes-toxic algae reappeared in the mid-1990s.

An unusually dense plankton bloom off the eastern coast of Thailand is creating an aquatic "dead zone", threatening the livelihood of local fishermen who farm mussels in the waters.