DNP The Daily RoundUp

You might say the day is never really done in consumer technology news. Your workday, however, hopefully draws to a close at some point. This is the Daily Roundup on Engadget, a quick peek back at the top headlines for the past 24 hours -- all handpicked by the editors here at the site. Click on through the break, and enjoy.

Future soldier: Theoretical physicist Michio Kaku on building a Death Star and Silicon Valley brain drain

Morning light shines softly through a large glass window as a travel-weary Michio Kaku gamely musters a smile. Then the camera starts rolling. In an instant Kaku transforms from an exhausted traveler, to a newly rejuvenated physicist as he plays to his audience and waxes poetic about his favorite subject -- science. Read on for our full interview.

Firefox OS hands-on: Alcatel OneTouch Fire and ZTE Open (video)

We've crossed paths with Firefox OS before, but today marks the first time we've used handsets running the final build of Mozilla's mobile OS. The Alcatel OneTouch Fire and ZTE Open, shown at the link above, are the same phones we played with at MWC earlier this year -- in fact, the latter just launched in Spain on Telefónica for €69 ($90) unsubsidized including €30 ($39) of airtime for prepaid customers. Read on for our full impressions of both devices.

HP exec says company will re-enter smartphone market, is working on a device that offers a unique experience

HP and phones? It's not over, apparently. The company's Senior Director of Consumer PCs and Tablets for Asia-Pacific, Yam Su Yin, has told The Indian Express that HP isn't done with smartphones and is already working on a new device.

The Daily Roundup for 07012013

Ex-Xbox chief Don Mattrick lands at Zynga, officially (update: comments from Ballmer and Mattrick)

We just got the news that ex-head of Xbox, Don Mattrick, was out at Microsoft, and now we know where he's going: Zynga. AllThingsD reports that Mattrick is officially the new CEO of the casual social gaming firm.