For a start, the song at about the 6 minute mark (note the "je t'aime" (French, "I love you") to find your place, if you load the subs.)

Mikazuki no Shindai

Original / Romaji Lyrics

English Translation
  poketto ni kakushita
  kirinu ki no je t'aime
  anata no kizukana i
  kodoku no tobira no gaki          

Inside of my pocket, there hides a
          scrap that has written "je t'aime."
          Unguessed by you, there exists a key
          to the portal that sits there so lonely.

  seisa no yane no shita ni
  hisomu yoru no sei
  anata wo tsurete iku no
  watashi ga nemukunaru no
  matteiru sotto

The stars float, spinning in the twilight eve.
          Spirits glide quiet underneath,
          taking you along with them where they go.
          Sleep comes over me as I sit here
          and wait for you, softly though.

  * mikazuki no shindai
    futako no youni yume miru
    keredo ko no yo dei chiba no
    anata wa tooi

* In the bed of the crescent moonlight,
            just like a twin, I see the same dreams you do.
            But in this world of all those whom I want,
            you are the farthest from me.

  doko ka shiranai basho de
  anata ni koi shita
  kurekaesu merodeii o
  sasakeru no sono yasashii mashii ni

Somewhere far, in a place I cannot say,
          somehow with you I fell in love.
          Take this melody here, repeating so,
          then offer it; give the song to this sweet and kind spirit.
          Softly though, Softly though.

  * kurikaesu

* repeat
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There are three other translated songs for Please Save My Earth at:

http://www.animelyrics.com/anime/psme

When I say, "for a start"...I mean I'm done.