Vast amounts of energy are needed to synthesize the hundreds of millions of tons of chemicals used in everyday life each year. To meet that demand, the chemical industry uses the energy released during fuel combustion, thereby producing a seventh of the anthropogenic emissions of greenhouse gases. Climate change makes it mandatory to replace fossil fuels in chemical production processes and reduce their climate impact (1–3). On page 756 of this issue, Wismann et al. (4) focus on reducing the CO2 emissions created during the production of molecular hydrogen (H2), a key building block for ammonia-derived fertilizers, through steam reforming of methane. This industrial process releases 9 kg of CO2 per kg of H2, a quarter of which comes from fuel combustion. NOTE: We only request your email address so that the person you are recommending the page to knows that you wanted them to see it, and that it is not junk mail. We do not capture any email address. © 2019 American Association for the Advancement of Science. All rights reserved. AAAS is a partner of HINARI, AGORA, OARE, CHORUS, CLOCKSS, CrossRef and COUNTER.Science ISSN 1095-9203. Sinopec Vinyl Acetate Monomer, Polyvinyl Alcohol...