Welcome to IRL, an ongoing feature where we talk about the gadgets, apps and toys we're using in real life and take a second look at products that already got the formal review treatment.

For every Engadget editor who's gotten to test an HTC One (that'd be five of us so far), there are two more waiting to take it for a spin. Well, you can cross Mr. Fingas off the list, at least: he's been playing with the One on Canada's Rogers network, snapping photos in the lowest-lit places Ottawa has to offer. James Trew, meanwhile, is excited to finally use Goal Zero's Sherpa 50 solar charger, mostly because it means England is finally getting some decent weather.

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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.

DNP Inhabitat's Week in Green TKTKT

As scientists and renewable-energy developers continue to make advances in solar and wind technology, it's becoming more apparent than ever that clean energy doesn't just represent the future -- it's also the present. Spain proved that this week, when the Mediterranean country announced that it produced an impressive 54 percent of its total energy in April from renewable sources. Researchers at Yale University discovered a way to boost the efficiency of solar cells by 38 percent simply by coating them with a fluorescent dye. In another promising development, scientists at the University of Georgia developed a way to harness the photosynthetic process to generate clean energy from plants. And at a conference in California, NRG unveiled a mini prefabricated solar canopy that could soak up rays in any garden or commercial lot.

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DNP Inside XPRIZE Visioneering how some of the world's brightest minds tackle the world's greatest challenges

There have been many critical moments in the history of space exploration -- Sputnik in 1957, Yuri Gagarin in 1961, Neil Armstrong in 1969 -- but if you look back over the history of manned happenings outside of the atmosphere, almost all of these moments were driven by government funds. You have to fast-forward all the way to October 4th, 2004, the moment that pilot Brian Binnie crested at an altitude of 112km in SpaceShipOne, to find a similarly important moment in the history of private space flight.

That moment wouldn't have come when it did, and may never have come at all, if there hadn't been some incentive. In 2004, XPRIZE (formerly the X Prize Foundation) paid $10 million to the Scaled Composites team headed up by Burt Rutan and Paul Allen for being first to make two trips to the edge of space in the span of two weeks. That single prize (which didn't come close to covering the team's expenses) ushered in a new era of private space travel and, for XPRIZE founder Peter Diamandis, demonstrated the power of competition.

XPRIZE didn't stop there, and each year it asks for help from some of the world's greatest thinkers, tasking them to decide which of the world's many and myriad problems are ready for solutions. Join us as we take you on the inside.

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Facebook Home's immediate future buddy lists, an app dock and folders

Facebook Home and the First phone to ship with it on board were revealed just over a month ago, and in the time since, the Home team has been hard at work improving the platform. Today at Facebook HQ we got to check in with Cory Ondrejka, Director of Mobile Engineering and Adam Mosseri, Director of Product to see how Home has been doing since its debut, and to hear what's in store for Home moving forward.

Thus far, Home's been installed on almost a million phones, which has given Facebook some clear insight about the ways it needs to be improved. Most complaints thus far have centered on Home's failings as an app launcher -- when you install Home on any phone, it rearranges your apps because there's no folder support and no app dock. Well, Mosseri and Ondrejka feel your pain and assured us that those two features will be rolling out in the coming months, and they plan to continue to iterate to make Home a robust launcher. Facebook also has plans to roll out a new buddy list feature that'll show up as an overlay on top of Cover Feed with a simple swipe. This lets users start conversations directly from Cover Feed instead of having to open up the messenger app to start chatting. That's not all Facebook has in store, however, so join us after the break for more.

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Engadget Primed The rise and rise of Bitcoin

Ask anyone about why Bitcoin has suddenly risen to prominence and they may offer one of a number of theories. Perhaps it'll be the one about Cypriots smuggling money out of their country, or the promise of a digital gold rush, or perhaps the tale of a disruptive new economy created by a person who may not even exist. Either way, if you'd like to untangle the myths, half-truths and labored economic newspeak behind the world that is Bitcoin, why not join us after the break?

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Engineering the future inside the third annual White House Science Fair

The White House West Wing, as ever, is very busy. It's nearly time for White House Press Secretary Jay Carney's daily press briefing, which today (April 22nd) will reveal that the Boston bombing suspect, Dzhokhar Tsarnaev, won't be tried as an "enemy combatant." Just upstairs, the atmosphere is thankfully less intense. In the East Room and surrounding chambers, over 100 students -- STEM-based competition winners from 40 different states -- are making their best efforts to remain chipper while explaining projects they've no doubt discussed dozens (if not hundreds) of times before.

Later this afternoon, President Barack Obama will address the dozens of attendees -- accomplished students and educators, as well as folks like Bill Nye ("The Science Guy"), Levar Burton (of Reading Rainbow fame) and Kathryn D. Sullivan (the first American woman to walk in space). He'll characterize the students' projects as "really cool," and he'll call out some lucky winners by name while speaking to the importance of science, technology, engineering and mathematics (STEM) education in the United States.

Today is the culmination of years of work for many attendees, and it's an important day for the current administration as well. The White House Science Fair is an annual highlight of its "Educate to Innovate" initiative -- the Obama administration-led program that directs both public and private funds to a variety of programs, all aimed at bolstering STEM education in the US. It's a long-term, ambitious plan, and one that the White House is re-dedicating itself to in its proposed fiscal year 2014 budget: a planned reorganization coupled with $265 million, "redirected from within the Department [of Education] and from other agencies."

Beyond the occasional PR bump that events like the White House Science Fair bring, the Educate to Innovate initiative is largely one that won't reap dividends for some time. In 20 years, however, it may be the most important component of Obama's legacy.

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Samsung Galaxy S 4 Exynos 5 Octacore benchmarks tktk

Samsung's latest flagship, the Galaxy S 4, comes in two distinct flavors -- and they're both good. One uses the much-hyped Exynos Octa-core chip, while its identical twin takes advantage of the quad-core Qualcomm Snapdragon 600. In either case, the availability depends on where you live: the Exynos-powered I9500 is difficult to find in North America (at least for now), but our friends at Negri Electronics, an online retailer currently stocking the Octa-core device, gave us the opportunity to play with a unit for a few days. During our time with the device, we were able to get a solid feel for how this particular version of Samsung's flagship compares to the Snapdragon 600-powered model. So how does it hold up against its Qualcomm brother in terms of performance and battery life? Read on to find out.

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Welcome to IRL, an ongoing feature where we talk about the gadgets, apps and toys we're using in real life and take a second look at products that already got the formal review treatment.

IRL: Dell's U2713H monitor and the X-Arcade Dual Joystick

A fleet of fancy cameras deserves a high-end monitor to match, right? And do we really need to explain why an Engadget editor would impulsively buy an arcade-style controller?

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Welcome to The After Math, where we attempt to summarize this week's tech news through numbers, decimal places and percentages.

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This week's After Math appears to have taken on a comic book theme. Want to make your own Thor hammer? How about your very own Atomic Watch -- rather than those radio-wave-based excuses of a timepiece? We've also got the very real prospect of civilian flights to outer space and, er, Kobe Bryant advertising Lenovo smartphones. Stranger things have happened, right? Join us after the break.

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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.

DNP Inhabitat's Week in Green TKTKTK

The start of May saw an abundance of groundbreaking stories about flora and fauna -- first, there was the heartwarming story of Naki'o, the first dog to be fitted with four prosthetic limbs after losing his legs to frostbite. Then we were surprised and slightly disturbed to learn that scientists in Uruguay used genetic engineering to create glowing sheep with genes from the Aequorea victoria jellyfish. In other illuminating news, a team of bioengineers in San Francisco is using genes from fireflies to create plants that glow. And the Institute of Space Systems in Germany announced plans to use Heliospectra's new LED lighting systems to conduct research into growing vegetables in outer space.

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