The podcast episodes discuss blue hydrogen as a lower-cost alternative to green hydrogen, produced from renewable energy, for decarbonizing hard-to-abate sectors like shipping and industry.

The episodes explore the potential benefits of blue hydrogen, such as its energy density and storage advantages over pure hydrogen, as well as the significant challenges, including high costs, water scarcity, regulatory hurdles, and the need for extensive infrastructure development.

The episodes also highlight the ongoing debate around the climate impact and long-term viability of blue hydrogen, with the latest IPCC report questioning its emissions reduction potential compared to direct use of natural gas.