Daily Crunch 7/16/19

Welcome to TechCrunch daily news, a round up of the top tech news of the day. Presented by Bose. Bose Frames look like regular sunglasses, but tiny speakers hidden in the temples create an immersive experience unlike any other. Go to Bose.com to find out more. -- The head of Facebook's blockchain initiatives testifies before Congress -- Twitter gets redesigned -- and mobile ad company Vungle announces a big exit. Here's your Daily Crunch for July 16, 2019. Learn more about your ad choices. Visit podcastchoices.com/adchoices