By 2023, nearly 2 billion metric tons of steel will be produced annually, enough to cover Manhattan with a layer of more than 13 feet. Making this metal produces a lot of carbon dioxide. Overall, steelmaking accounts for around 8% of carbon emissions in the world-one of the largest industrial emitters and far more than sources such as aviation.A handful of groups and companies are now making serious progress towards low or zero-emission steel. Among them, the Swedish company Stegra stands out. The startup is currently building the world’s first industrial-scale factory that makes green steel. But can it keep its promise? Read the full story.-Douglas Main Green steel is one of the 10 Technological Breakthroughs for 2025, MIT Technology Review’s annual list of technologies to watch. Check out the rest of the list, and vote for the 11th breakthrough. 2025 is a critical year for climate technology — Casey Crownhart I love the fresh start that comes with a new year. And one thing adds a boost to our January Newest list of 10 Breakthrough Technologies. When I was looking through the list completed this week, I was struck by something: When there are some entries from other fields that are three or even five years old. far, all climate items are either newly available commercially or just going. It is fitting, as this year in particular will bring new urgency to the fight against climate change. It’s time for this technology to grow up and get out there. Read the full story. This story is from The Spark, our weekly climate and energy newsletter. Sign up to receive it in your inbox every Wednesday.
Download: Greener steel, and what 2025 means for climate technology
