Hydrogen

Just a few years back, making hydrogen without burning fossil fuels seemed like a science-fair trick. It required expensive gear, pristine water, and a mountain of electricity. Suddenly it’s edging toward everyday reality. What changed? A handful of practical tweaks reduce cost and power use. They also address water worries. These changes turn the once-fragile process into something almost kitchen-tough. Start with the hardware -  Engineers in Europe and India now build electrolysers like giant Lego bricks. These are 100-megawatt modules that lock together inside one plant. Scaling up this way has sliced roughly a third off equipment prices in…