The emergence of China-based #AI app #DeepSeek has sent shares plummeting for many U.S. #tech giants, including chipmaker #Nvidia suffering the biggest one-day #stock loss ever in the U.S. Rebecca Jarvis has details. #WorldNewsTonight #News #Economy

Researchers of a new #study have found potential benefits to popular #weightloss drugs like Ozempic, Wegovy and Mounjaro, saying the drugs appear to reduce the risk of #dementia, infections and substance abuse for some who are taking them. #DavidMuir reports. #WorldNewsTonight #News #Health