Fish excretions allegedly help fight climate change

Scientists have discovered that fish guts play a major role in the marine carbon cycle, making them unexpected allies against climate change.

Previously, UN scientists have warned that when the ocean absorbs more carbon dioxide emissions from the atmosphere, it also becomes more acidic, threatening coral reefs and other sea life.

This new study, to be published Friday in the journal Science, shows fish excretions of calcium carbonate can offset this acidity.