 It's Thursday, March 21st, 2013. I'm William Savona, and I have a pretty good idea what your reaction is to this outfit. This is 90 Seconds on the Verge, brought to you by Mercedes-Benz. Chrome OS and Android are to remain separate. That's according to the ever-rebose Google Chairman Eric Schmidt. Rumors of convergence have been around for a while, but peaked recently after Chrome VP Sundar Pichai replaced Andy Rubin as the head of Android. Schmidt also hinted that Google Now for iOS was stuck in the App Store approval process, but Apple Today disputed those claims. Speaking of Apple, the company is now offering a second step of security. The new safeguard requires Apple ID and iCloud users to verify their identity on a trusted device before making changes to their personal information. In offering the new measure, Apple is addressing critiques the company hasn't gone far enough to protect its users. Senior Wired writer Matt Honan's Apple account was compromised in a high-profile hacking incident from last year. Question is, now that the users have the option, will they ever use it? Finally, Twitter is now seven years old. The company celebrated with a video highlighting pivotal moments where Twitter played a role, such as protests in Egypt and President Obama's re-election photo. It also announced 200 million active users, an increase of 60 million over the past year. It also says more than 400 million tweets are sent every day. The very first tweet came from co-founder Jack Dorsey, who said, quote, just setting up my Twitter. That's Twitter with no vowels. That's it for today's top stories. Join us tomorrow when we'll look at the recent trend in analog eyeglasses.