engadget.com links in the past hours

Axio returns as Melon, an EEG headband that'll help you learn to focus

Cast AR hands-on with Jeri Ellsworth at Maker Faire 2013

Dell Project Ophelia USB Android stick to ship in July, priced at $100

Sprint closes deal to buy US Cellular spectrum, adds 420,000 customers

The Last of Us will debut 'play while it downloads' feature on the PS3

Google-built media streamer hits the FCC, reveals only a Hitchhiker's Guide reference

Amtrak boosts WiFi on select trains, more upgrades coming this summer

Stitcher adds car mode to iOS app, encourages responsible driving

University of Glasgow makes 3D models with single-pixel sensors, skips the cameras (video)

Twitter partners with NBA to highlight in-game replays, Blake Griffin posterizations

Lenovo's Intel-powered K900 smartphone on sale now in China, ships internationally this summer

Google Glass 'prescription edition' makes a cameo at Google I/O

Hangouts Easter Eggs put dinos and ponies in your chat

This week on gdgt: LG shows there's room for more than one mega-smartphone

LG Nexus 4 shows up in white at Google I/O (hands-on)

Wolfson WM5110 audio chip outputs 'studio master' sound, may appear in next Galaxy S (ears-on)

Telus agrees to acquire Mobilicity for $380 million, despite Canada's push for increased mobile competition

Amazon Kindle Keyboard 3G being discontinued?

Google Offers comes to Google+ with in-line save and share feature

NYC's Chief Digital Officer Rachel Haot on borough hopping with Google Maps and the Macintosh II

Soundhalo beta for Android lets us buy concert videos before the show is over

Distro Issue 91: What the #%$! is Bitcoin?

HTC overcomes supply issues, will double HTC One production capacity this month

Foc.us headset said to stimulate brain, hones in on gaming (forehead-on)

Samsung's Galaxy S 4 to hit 10 million in sales next week, says CEO JK Shin

MIT's cheetah robot runs faster, more efficiently, can carry its own power supply (video)

Sony's 13.3-inch e-ink paper prototype shown off at education expo in j*pan (video)

Nokia Xpress Now browser brings content discovery to Asha phones, in beta now

Razer Atrox arcade stick entices Xbox 360 fighters with swappable parts

Amazon lands Prime Instant Video exclusives for five NBCUniversal shows

Porsche shows 918 Spyder in production form

Portland's TriMet ushers in mobile ticketing for smartphones

No new EA games in development for Wii U, company reveals

MIT crafts analog circuits from living bacteria

Rumors mount for white Nexus 4, may launch with next version of Android

Google Glass rooted and hacked to run Ubuntu live at Google I/O

See Thorsten Heins, Alicia Keys and BBM during the BlackBerry Live keynote, now on YouTube

Tim Cook says US-made Mac will be new model in an existing family

Bill Gates regains title of world's richest person as Microsoft stock hits five-year high

Dell announces Q1 2014 results: $14 billion revenue, 21 cents EPS

Corning intros Lotus XT Glass for next-gen mobile displays, touts more efficient production (video)

Hands-on with the Samsung Galaxy S 4 running stock Android 4.2

j*pan-bound Sony Xperia UL leaks out with 5-inch screen, reportedly packs Snapdragon 600

BBM app for iOS and Android won't run on tablets at first

eBay's iPhone app updated with new UI and driver's license scanning

Google confirms Nexus Q not supported in latest version of Play Music

Lenovo IdeaPad Yoga 11S available online, reaches Best Buy on June 23rd

Google unveils Samsung Galaxy S 4 running stock Android Jelly Bean, available June 26th for $649

Engadget Giveaway: win one of two CASIS patches, signed by Shepard Fairey!

PebbleKit SDK update enables two-way communication for Pebble apps