Back in January, we spoke to a scientist at the National Ignition Facility about how close they were to achieving what’s been called “one of the most impressive scientific feats of the 21st century.” This week, they announced they’ve finally done it. A version of this episode originally ran on January 5, 2022. For more, go to http://vox.com/unexplainable It’s a great place to view show transcripts and read more about the topics on our show. Also, email us! unexplainable@vox.com We read every email. Support Unexplainable by making a financial contribution to Vox! bit.ly/givepodcasts Learn more about your ad choices. Visit podcastchoices.com/adchoices