Removing molten iron from a pilot scale facility at the Boston Metal facilities in Woburn, Mass.
Photo courtesy Boston Metal
The $1.6 trillion steel industry is the backbone of the modern world. It’s also a significant contributor to global warming, representing between 7% and 9% of global carbon dioxide emissions, according to the World Steel Association.
“There is no economy, there is no infrastructure without steel,” Boston Metal CEO Tadeu Carneiro told CNBC in a video call on Wednesday. So when it comes to decarbonizing industry to fight climate change, “it’s a big piece of the puzzle. I don’t think this is obvious to everybody,” Carneiro said.
In 2013, MIT professors Donald Sadoway and Antoine Allanore published a paper in the journal Nature with lab results proving that it is possible to generate steel without releasing carbon dioxide emissions. The same year they launched a company, Boston Electrometallurgical Corp., to scale and commercialize that technology.
Gates has for years emphasized the need to think about decarbonizing the manufacturing sector. Transportation gets a whole lot of attention but is responsible for only 16% of global emissions, where manufacturing generates 31%, according to Gates’ book, “How to Avoid a Climate Disaster.”
“Whenever I hear an idea for what we can do to keep global warming in check — whether it’s over a conference table or a cheeseburger — I always ask this question: ‘What’s your plan for steel?'” Gates wrote on his own blog in 2019.
On Friday, Boston Metal announced it has raised $120 million Series C round, led by multinational steel giant ArcelorMittal, with funding from Microsoft’s Climate Innovation Fund as well.
With the funding, Boston Metal will ramp up production of green steel at its pilot facility on Woburn, Massachusetts, and support the construction of its Brazilian subsidiary, Boston Metal do Brasil, where the company will manufacture various metals. It plans to begin construction of a demonstration steel plant in 2024 and a commercial sized plant in 2026, Carneiro told CNBC.
The Boston Metal team.
Photo courtesy Boston Metal
The cost of carbon for ArcelorMittal
For ArcelorMittal, making steel without greenhouse gas emissions is not only a responsibility, but also a business necessity according to Irina Gorbounova, a vice president and the Head of XCarb Innovation Fund at ArcelorMittal.
“Our customers are asking for it, our investors expect us to transition and our employees — and our future workforce — want to work for a company that is part of the solution and not part of the world’s climate problem,” Gorbounova told CNBC.
“Increasingly, we are also seeing a cost of carbon,” Gorbounova told CNBC. In Europe, the Emissions Trading System, or ETS, already puts a price on carbon emissions, Gorbounova told CNBC.
“The EU has been at the forefront of climate policy, but it’s reasonable to expect other regions to follow. So, there is a business case for us to decarbonize as well,” Gorbounova told CNBC. “Zero or near-zero carbon emissions steel will become a reality. The only question is how quickly we can make that journey happen. If steel companies don’t decarbonize, they will not stand the test of time.”
Ironically, steel is a primary component ingredient in many of the technologies being constructed to decarbonize, such as wind toward and electric vehicles, Gorbounova said.
Microsoft does not build cars or make steel, but it is trying to meet its own aggressive climate goals, which include being carbon negative by 2030 and removing all of the company’s historic carbon emissions since the company was founded in 1975.
Boston Metal CEO Tadeu Carneiro worked in the steel industry for decades before coming on to lead the MIT spin out.
Photo courtesy Boston Metal
How does Boston Metal do it?
Traditionally, the first step in steel production is to combine iron ore or iron oxide, which is mined out of the ground, with coal in a very hot blast furnace. That process generates significant CO2 emissions.
Scrap recycling is also a key part of the global industry, accounting for 30% of steel production (70%in the United States), and has a “much smaller” carbon footprint, Carneiro said.
Boston Metal’s technology, Molten Oxide Electrolysis, passes electricity through the iron oxide mixed with what Carneiro calls a “soup of other oxides” to make iron and oxygen. Oxides are chemical compounds that contain at least one oxygen atom, and Boston’s process includes common oxides like alumina, silica, calcium and magnesium.
“There’s no carbon involved” in the process of making the iron from this method, Carneiro said.
That said, heating this soup to the required 1,600 degrees Celsius requires significant electrical energy — making one million tons of steel per year will require 500 megawatts of baseload clean electricity, or about half the electricity necessary to power a midsize city. “The availability of electricity will dictate how fast the process will be implemented,” Carneiro said.
The electricity has to be clean as well, or it defeats the entire purpose.
“We believe in the future, we will have abundant and reliable and green and cheap electricity in order to use this process and manufacture green steel,” Carniero said.
There are other processes being developed to make clean steel with hydrogen, but they require very pure iron oxide, and only about 4% of the iron ore that is commercialized is suitable, Carniero said.
Boston Metal will eventually license its technology to steel companies, not be a steel manufacturer itself.
“Every steelmaking company is in contact with us to understand our progress and when we will become commercial,” Carneiro told CNBC. “They all making pledges to be carbon-neutral by 2050. And they don’t really have a solution right now. So, they really need a solution for large scale, and our technology is the only one that can scale up to this billions of tons of capacity.”
An illustration photo shows Moore Threads logo in a smartphone in Suqian, Jiangsu Province, China on October 30, 2025.
Cfoto | Future Publishing | Getty Images
Shares of Moore Threads, a Beijing-based graphics processing unit (GPU) manufacturer often referred to as “China’s Nvidia,” soared by more than 400% on its debut in Shanghai following its $1.1 billion listing.
Moore Threads’ IPO was led by CITIC Securities, which served as the lead underwriter for the offering. The joint book runners on the deal were BOC International Securities, China Merchants Securities, and GF Securities.
The company, which is not yet profitable, said in its listing that the IPO proceeds are needed to accelerate several core research and development initiatives, including new-generation self-developed AI training and inference GPU chips. A portion of the funds will also be used to supplement working capital.
Moore Thread’s successful IPO comes despite it being placed under U.S. sanctions in 2023, which limited its access to advanced chip manufacturing processes and foundries.
The firm is representative of a growing cast of Chinese companies developing AI processors amid Beijing’s efforts to reduce reliance on American chip designer Nvidia.
Other companies in the space include tech giants like Huawei, as well as more specialized players like Cambricon — a firm whose shares on the Shanghai exchange have surged more than 100% year to date.
Washington has maintained varying export restrictions on Nvidia for years, preventing it from selling its most advanced AI chips to China. More recently, Beijing has also stepped in to block imports of Nvidia’s chips as it tries to encourage domestic alternatives like Moore Threads.
Newer players like Enflame Technology and Biren Technology have also entered the space, aiming to capture a share of the billions in GPU demand no longer served by Nvidia. Chinese regulators have also been clearing more semiconductor IPOs in their drive for greater AI independence.
Anthony Noto, CEO of SoFi, speaking with CNBC at the annual Allen & Co. Media and Technology Conference in Sun Valley, Idaho on July 10th, 2025.
David A. Grogan | CNBC
SoFi shares fell almost 6% in extended trading Thursday after the fintech company announced a $1.5 billion stock offering.
The company, which provides online loans and other banking services, said in a press release that it will use the proceeds for “general corporate purposes, including but not limited to enhancing capital position, increasing optionality and enabling further efficiency of capital management, and funding incremental growth and business opportunities.”
The announced offering comes after SoFi’s market cap almost doubled so far in 2025. The stock price is up more than sixfold since the end of 2022.
A company’s share price often drops on a planned share sale as the offering dilutes the value of existing holders’ stakes.
In its third-quarter earnings release in late October, SoFi reported revenue growth of 38% from a year earlier to $961.6 million, while net income more than doubled to $139.4 million. The company reported cash and equivalents of $3.25 billion.
Lisa Jackson, senior vice president of environment, policy and social initiatives at Apple Inc., speaks during the TechCrunch Disrupt 2017 in San Francisco, California, U.S., on Tuesday, Sept. 19, 2017.
David Paul Morris | Bloomberg | Getty Images
Apple’s general counsel, Kate Adams, and its vice president for environment, policy, and social initiatives, Lisa Jackson, are retiring from the company, the iPhone maker announced on Thursday.
Jennifer Newstead, Meta’s chief legal officer, will become Apple’s new general counsel in March, and Jackson’s government affairs staff will report to her starting late next year, Apple said.
The two executives, who both reported to Apple CEO Tim Cook, are the latest members of senior leadership to exit the company. In recent weeks, Apple’s head software designer said he was leaving to join Meta, while Apple said its AI chief was retiring, along with its chief operating officer.
Adams joined Apple from Honeywell and became general counsel in 2017, and oversaw legal matters including litigation, global security, and the company’s privacy initiatives. Under Adams, Apple grappled with rising antitrust scrutiny and regulation around the world, including major lawsuits in the U.S. over the iPhone App Store’s restrictions and fees.
Jackson joined Apple in 2013, and led the company’s diversity programs as well as much of its policy work in Washington, D.C. Before that, she spent four years as administrator of the U.S. Environmental Protection Agency, a position she was appointed to by President Barack Obama.
With her emphasis in areas like social justice and renewable energies, Jackson’s job lost relevance during the second Trump administration, which has publicly denounced diversity, equity and inclusion programs and slammed efforts to combat climate change.
Apple has faced increased tariffs from the Trump administration, and Cook has met with President Donald Trump several times to tout the company’s American manufacturing plans as part of an effort to influence policy.
Jackson was instrumental in Apple’s launch of its Racial Equity and Justice Initiative following the 2020 murder of George Floyd. She then helped expand the company’s equity and justice efforts to other countries, including the U.K., Mexico and New Zealand, according to a report published in 2023.
“At Apple, we pledge that our resolve will not fade,” Jackson wrote in a section of that report. “We won’t delay action. We will work, each and every day, on the urgent task of advancing equity.”
Jackson also worked on Apple’s environmental image. Her job “focused on reducing greenhouse gases, protecting air and water quality, preventing exposure to toxic contamination, and expanding outreach to communities on environmental issues,” according to her bio on the company’s website. She discussed Apple’s plans to become carbon neutral at iPhone launch events.
Jackson also accompanied Cook to several official functions in Washington, including state dinners.
Apple CEO Tim Cook and Apple Vice President Lisa Jackson arrive at the White House for a state dinner on April 10, 2024 in Washington, DC.
Tasos Katopodis | Getty Images
Newstead, who will become Apple’s top lawyer, has overseen Meta’s legal and regulatory matters pertaining to its family of apps like Facebook, Instagram, WhatsApp since 2019. A Meta spokesperson said Newstead will be staying through the end of the year and that the company is actively searching for her replacement.
Prior to Meta, Newstead served as a Trump-appointed legal advisor at the State Department during the president’s first administration in 2019.
Before that, she was a partner at Davis Polk & Wardwell and a general counsel of the White House Office of Management and Budget, among other roles in the U.S. government.