The inner workings of fireworks

Related: Technology & science

1. Headlines
   1. Science Guy Bill Nye adds smarts to smartphones

      Updated 85 minutes ago 6/20/2013 12:46:58 AM +00:00 Bill Nye the Science Guy is celebrating the 20th anniversary of his science show's debut with an app that puts games, experiments and bow-tie tips on smartphones and tablets.

   2. Apple TV gets HBO Go, WatchESPN
   3. Battery tests show Apple's new MacBook Air beats competitors by a mile
   4. Google: 'We're not in cahoots with the NSA'
   5. Explore a billion-pixel view from Mars rover
   6. See Alaska -- all of it -- in beautiful space image
   7. Xbox One 180: Microsoft ditches always-on DRM, lending restrictions
2. Multimedia
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      Toxic levels found at Fukushima's nuclear plant 
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      Sci-fi game 'Killzone: Shadow Fall' was inspired by Cold War Berlin
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      Mexico volcano spews ash two miles high
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      How the PlayStation 4's hardware will bring a new realism to video games