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Japan and South Korea must recognize blue hydrogen is not clean

Even direct use of fossil fuels can involve lower greenhouse emissions

| Japan
The world's first hydrogen carrier arrives from Japan at the Port of Hastings in Victoria, Australia, on Jan. 20: Hydrogen is not a new source of energy but a form of energy storage. (Handout photo from HySTRA)   © Reuters

Robert Howarth is Atkinson Professor of Ecology and Environmental Biology at Cornell University and co-author of the peer-reviewed research paper "How green is blue hydrogen?"

The global energy system is undergoing a major transformation. Fossil fuel prices are soaring, and extreme weather and war are causing massive blackouts and energy shortages.

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