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DATE: October 13, 2017

SNIP: Scientists have found clams and worms in the Baltic Sea are giving off as much gas as 20,000 dairy cows. They are worried because large amounts of methane and nitrous oxides are being released from the bacteria in their guts. The discovery of these greenhouse gases means they will need to be taken into account when tackling global warming.

A Cardiff and Stockholm universities’ study found 10% of methane emissions from the Baltic Sea came from clams.

The study’s co-author Dr Ernest Chi Fru, from Cardiff University’s School of Earth and Ocean Sciences, said: “What is puzzling is that the Baltic Sea makes up only about 0.1% of Earth’s oceans, implying that globally, apparently harmless bivalve animals at the bottom of the world’s oceans may in fact be contributing ridiculous amounts of greenhouse gases to the atmosphere that is unaccounted for.”