A team of Chinese scientists developed a strategy utilizing the energy between seawater and freshwater to efficiently generate "green" hydrogen.Hydrogen, a clean energy, has emerged as a promising solution to reduce carbon emissions in the power sector and move toward a more sustainable future.The researchers from Fudan University fabricated a tandem of high-performance ion exchange membrane and electrode, installed at estuaries to harvest osmotic energy and drive hydrogen production, China's News Agency (Xinhua) said.The integrated device demonstrates a consistent and quick alkaline hydrogen evolution rate for more than 12 days under the artificial salinity gradient.The study presents a viable pathway for hydrogen production through renewable sources, said the researchers.