Very easy song, good one to practice singing along while playing.  Shouldn't need the chord diagrams... 
 
Intro/Verses: 
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Intro:(just play the riff x1) 
 
Verse 1:(play riff x2) 
I watch as the daylight crawls 
past the shadows hanging on the walls 
it's been a long time since I felt THE STAIN 
OF yesterday getting in my way 
 
 
      G             D          Am 
Chorus:      I'm alive but tell me am I free 
                  G            C 
      I got eyes but tell me can I see 
                G            A      D 
      The sky is falling and no one knows 
      G           D              Am 
      It shouldn't be hard to believe 
                     G             C 
      Shouldn't be this difficult to breathe 
                G            A      D 
      The sky is falling and no one knows 
 
Verse 2:(play riff x2) 

YOU leave me hanging on 

I need to catch my breath 

I've got you and I've got nothing left 

don't leave me all alone down here 

with myself and all of my fear 
 

      G             D          Am 
Chorus:      I'm alive but tell me am I free 
                  G            C 
      I got eyes but tell me can I see 
                G            A      D 
      The sky is falling and no one knows 
      G           D              Am 
      It shouldn't be hard to believe 
                     G             C 
      Shouldn't be this difficult to breathe 
                G            A      D 
      The sky is falling and no one knows 
      G    A      D 
      No one knows 
      G    A      D 
      No one knows 
 
Bridge:      
Am  C  G  D  Am C G (sorry no timing) 
 
      G             D          Am 
Chorus:      I'm alive but tell me am I free 
                  G            C 
      I got eyes but tell me can I see 
                G            A      D 
      The sky is falling and no one knows 
      G           D              Am 
      It shouldn't be hard to believe 
                     G             C 
      Shouldn't be this difficult to breathe 
                G            A      D 
      The sky is falling and no one knows