Marketplace Morning Report You've heard of grass-fed beef. How about seaweed-fed beef?
Oct 29, 2025
David Kelly, Chief Global Strategist at JPMorgan Funds, discusses potential Federal Reserve interest rate cuts amidst economic uncertainty. Meanwhile, Amy Scott, host of the climate podcast How We Survive, shares fascinating research from UC Davis on using seaweed to reduce methane emissions in cattle. The study reveals that a seaweed additive can alter cows' microbiomes, leading to a significant decrease in emissions. This innovative approach could transform livestock farming and help combat climate change.
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Seaweed Can Cut Cattle Methane
- Livestock produce 12–20% of global greenhouse gases, mostly methane from digestion.
- UC Davis research shows feeding seaweed early can alter cattle microbiomes and cut methane output by persistent amounts.
Research Barn Demonstration
- At UC Davis interns mix a seaweed additive into cattle feed and sensors record belches for methane data.
- Early trials showed feedlot cattle emissions fell up to 90% when seaweed was added to their diet.
Early-Life Treatment Has Lasting Effects
- Short-term seaweed treatment from day two to three months produced a 20% methane reduction five months after stopping.
- This suggests early-life microbiome changes may have lasting effects on emissions.