News Summary

• The MIT Technology Review team puts together a list of some of the most promising climate tech companies in the world.
• There’s an urgent need for these innovators: We must begin to drastically reduce emissions to avoid the deadliest impacts of climate change.
• From energy storage powered by carbon dioxide to cleaner ways to make cement and refine critical minerals, these companies are building technologies to address the acute challenges we face.
• This is the fourth annual edition of this list.
• Learn more about how we chose the 2026 slate.