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