The list features businesses from around the world that are building technologies to reduce emissions or address the impacts of climate change. They represent advances across a wide range of industries, from agriculture and transportation to energy and critical minerals. One notable difference about this year’s list is that we’ve focused on fewer firms—we’ll highlight 10 instead of the 15 we’ve recognized in previous years. This change reflects the times: Climate science and technology are in a dramatically different place from where they were just one year ago. Today, experts agree that we’ve virtually run out of time to reach that goal and will need to act fast to limit warming to less than 2 °C.