Oceans already absorb about 30% of the planet’s atmospheric carbon. Nascent technologies are aiming to boost oceans’ ability to remove carbon dioxide from the atmosphere. The startups behind them are attracting money from the U.S. government and big companies. WSJ reporter Eric Niiler joins host Zoe Thomas to explain how the tech works and its potential impact. Plus, Meta is using public information from its U.S.-based accounts to train its artificial intelligence systems. We'll tell you how you can avoid sharing your data. Sign up for the WSJ's free Technology newsletter. Learn more about your ad choices. Visit megaphone.fm/adchoices