Each week our friends at Inhabitat recap the week's most interesting green developments and clean tech news for us -- it's the Week in Green.

Mobile technology continues to expand and evolve, but until we develop a way to charge our devices on the go, we'll continue to jockey for outlets at airports and coffee shops. Enter Angelo Casimiro, a 15-year-old who has developed a shoe that harnesses the power of footsteps to charge your phone. The youth of today continue to be at the forefront of renewable energy innovation; a 14-year-old named Gregory Martin recently made a major biofuel breakthrough with a technique that boosts the amount of lipids in algae by over 500 percent.

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There are times when I just want to lie in bed and surf random YouTube channels on my phone or tablet, but it's impossible to hold the device above my head for a prolonged period (we've all been there, right?).

Luckily, I stumbled upon this neat kit in Shenzhen one day: a swing-arm tablet holder by some random brand called Usiabu, and it only cost me CN¥80 or $13, as it was from a wholesale dealer (retail price is around $25 in Hong Kong, and Amazon's start from around $30). As you can tell from the price, this product doesn't involve any groundbreaking technology: you've probably already come across desk lamps that use this type of spring-loaded mechanism.

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MeMO Pad 7 and 8

A few years ago, tablets were poised to replace laptops as the computing device of choice. That never happened, as we've largely stuck with laptops and phones as our daily drivers, with tablets relegated to a secondary role. If you don't use a tablet that much, it certainly seems wise to avoid dropping a lot of cash on one. But a lower price often means compromises, and too many compromises means you won't be using the tablet at all. To figure out how many corners you can cut when it comes to purchasing a sub-$200 tablet, we've gathered opinions from across the web, from our own reviews to the opinions of other trusted critics. Which cheap tablets balance performance and price to still deliver a good experience? When is it worth spending just a little bit more money? And which deals are too good to be true?

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Casio continues to inch its G-Shock series toward something a little smarter, while holding onto a simple monochrome LCD display and that distinctly G-Shock styling. The "G'Mix" GBA-400 improves on the typical digital watch feature list through Bluetooth, a pair of dedicated apps (one for the watch part, one for the music-playing part) and your smartphone, whether it's iOS or Android. Oh and there's a giant dial control on the side and it's really satisfying to play with.

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The Engadget Live tour continued last week, with the latest stop taking place in Boston. Just like at our previous two events, in Austin and Seattle, Beantown didn't disappoint and the reader turnout was incredible. Attendees were treated to a night filled with a myriad of activities, giveaways and social mingling. Want to know what you missed? Check out the picture gallery bellow, where you'll also get a glimpse of what the sponsors brought over to the Royale venue to share with the Engadget aficionados in attendance.

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This morning, Facebook-owned Instagram released a new, free iOS app for making time-lapse videos. It's called Hyperlapse. Though it sounds simple, the app is anything but: it adds beautiful image-stabilization to normally shaky-cam. We've compiled half a dozen of the best videos we've seen thus far, but we'd love to add more to our collection as the day goes on. Let us know about your favorites in the comments below, on Twitter/Facebook/G+/the Engadget forums, by carrier pigeon -- really, whatever means you'd like. Preferably not smoke signals

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Nokia Verizon

LTE isn't just about getting incredibly fast data speeds on our smartphone or tablet. Sure, that's been what the technology's been primarily used for ever since it was introduced a few years ago, but it's capable of providing crystal-clear phone calls as well through a service known as Voice over LTE (VoLTE). The catch is that it's up to each carrier to provide the service. AT&T and T-Mobile have rolled out the capability already, and Verizon announced today that it's nearly ready to flip the switch on VoLTE nationwide, and it'll happen in a matter of weeks. Whether that means two or fourteen, Verizon won't say. But when it's ready, this functionality will be pre-loaded on new devices and pushed to existing phones in a downloadable update (provided the hardware is compatible, which many devices are).

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Orbotix, now simply known as Sphero, had the world in awe when it introduced its smartphone-controlled, ball-shaped toy back in 2010. Back then, we were still getting used to the concept of "connected" things. Today, nearly four years after making its debut at the Consumer Electronics Show, Sphero is one of the most popular peripherals around, on iOS and Android alike. But while the robotic ball may have started off as a knickknack for kids, or adults, to play with, it has recently started to break into another, more serious field: education. In an effort to boost that, Sphero launched an initiative called SPRK about five months ago, with the goal of letting schools adopt its product into education curriculum. Simply put, kids could not only learn about programming, but also have fun doing so.

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Making things -- it's pretty awesome whatever you're creating. But, some things really encapsulate the maker spirit -- and this is one of them. It's an "inflatable" (or rather, inflated) steel suit, designed so you can enjoy the next fireworks display up close. Real close. Like the inside, kinda close. Its creator, Colin Furze, welded together sheets of steel, and hydroformed them into shape in sections. He originally tried doing the suit in one go, but the joints apparently tore at his "man bits." As you can imagine, mobility is a bit of an issue, but you'll see in the video -- there's a knack to it that Furze soon picked up. Anyway, the making of the suit is one thing, but you probably want to know what it's like to use it among £500's worth (about $830) of fireworks? Luckily enough there's a video of exactly that (from inside and outside perspectives), and it's just a click away.

[Burley images]

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I'm all about minimizing the amount of stuff I need to carry with me, which is why smartphones have been great -- they can double as a camera and even a portable gaming handheld. But when it comes to riding my bike, I still prefer a dedicated device. This is why I picked up a Garmin Edge 510, and now I don't think I'd ever go back to using a smartphone to track my workouts.

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