(MIT Technology Review)2 Companies’ AI spending is spiralling out of controlAnd it’s unclear whether they’ll ever get returns on their investments. (WSJ $)+ Some VCs are convinced AI is the best way to make a quick buck. (MIT Technology Review)4 How America is winning the war on city firesMaking homes fire-resistant isn’t glamorous—but it’s essential. (MIT Technology Review)5 Top AI firms are going all-in on world modelsThey’re powered by videos and robotics data, not just language. (WSJ $)6 China is rushing to electrify freight trucksNot content with dominating the electric car market, it’s eyeing bigger vehicles.