The Download: empty AI climate claims, and an Nvidia investigation

Plus: Democrats are planning a blitz of investigations into Big Tech. This week, as countries meet in Antalya, Turkey for the United Nations climate conference, one topic is likely to dominate the conversation: artificial intelligence. The host has already called on countries to commit to ensuring that AI is designed, powered, and deployed in ways that support climate action. But so far, industries around the world aren't doing nearly enough to harness the technology to actually drive down the greenhouse-gas emissions heating up the planet. AI companies like to make very optimistic claims about AI's potential to help address climate change. The reality is far less promising.