Coldplay

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Across
  1. 5. Superlative to the difficulty of a situation
  2. 8. Connotes cowardliness or treacherousness
Down
  1. 1. The song is the first anti-war protest song from the band
  2. 2. Its prime factorizations are 2, 3, 7
  3. 3. Main character in the comic strip 'Peanuts'
  4. 4. A strong feeling of anxiety
  5. 6. Electrical conduction through a gas in an applied electrical field
  6. 7. The abode of Adam and Eve before the Fall in the biblical account of the Creation; the Garden of Eden.