Sometimes small news can reveal big truths. When Microsoft released its annual sustainability report in May, it was hardly a blockbuster story—but the numbers hid something interesting: the company has increased its emissions by 30 percent since 2020. Why? One key explanation can be summarized in two letters: AI. Microsoft’s massive investment in artificial intelligence has led to proportionally massive climate emissions. Artificial intelligence requires a lot of energy. This isn’t only true for Microsoft, but all other tech companies as well—and by 2027, the world’s AI services are expected t…