The plants in the salt marsh grow fast, sucking a lot of carbon dioxide out of the air and some of that carbon gets trapped as plants die and new ones grow over them. It makes the wetlands a carbon sink, as some researchers call it.
Decades ago, the Los Angeles coast was a dumping ground for thousands of barrels of acid sludge laced with the toxic pesticide DDT. The ocean buried the evidence for generations. No one could see it — until now.
The Japanese government is about to announce the dumping of more than 1 million tons of radioactive water from the Fukushima Daiichi nuclear power plant into the sea. This is an official decision that could come by the end of October, according to Japanese media reports.
Even the pitch black, nearly freezing waters at the bottom of the ocean – far from where humans live and burn fossil fuels – are slowly warming, according to a study of a decade of hourly measurements.