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Summer science: Methane-busting seaweed

RNZ: Our Changing World by RNZ

Jan 19, 202600:13:40Science & Medicine

A Southland company is growing red seaweed as a supplement that’s been shown to significantly reduce methane emissions in beef and dairy cattle. In our last summer science series episode, Cosmo Kentish-Barnes of the Coun...

About This Episode

Summer science: Methane-busting seaweed is an episode from RNZ: Our Changing World by RNZ. A Southland company is growing red seaweed as a supplement that’s been shown to significantly reduce methane emissions in beef and dairy cattle. In o...

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Episode Details

Published Jan 19, 2026, 00:13:40 long, audio available.

Questions About This Episode

What is Summer science: Methane-busting seaweed about?

A Southland company is growing red seaweed as a supplement that’s been shown to significantly reduce methane emissions in beef and dairy cattle. In our last summer science series episode, Cosmo Kentish-Barnes of the Country Life team heads to Bluff to learn more. Sign up to the Our Changing World monthly newsletter for episode backstories, science analysis and more. Learn more: You can read Cosmo Kentish-Barnes' story about this topic, Red seaweed cuts methane emissions from cattle, scientists say. Cosmo signed off from the Country Life team earlier this year, after 17 years as the show's South Island producer. You can listen to his final episode . There are also pāua and whitebait farms operating out of the Ocean Beach Aquaculture Hub in Bluff. Kate Evans visited both ventures in a 2024 episode of Voice of Tangaroa, Fish out of water . Guest: Brent Jackson, production scientist Go to this episode on rnz.co.nz for more details

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Which podcast is Summer science: Methane-busting seaweed from?

Summer science: Methane-busting seaweed is an episode from RNZ: Our Changing World by RNZ.

How long is this episode?

This episode is 00:13:40 long.

When was this episode published?

This episode was published on Jan 19, 2026.

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