Lights Out for Darker Skies Lyrics

Lyric discussion by RO5SM 

Cover art for Lights Out for Darker Skies lyrics by British Sea Power

I think it may have some environmental meaning:

"Welcome for the day or stay forever There's things which we all need to navigate"

I think this relates to taking care of the earth longer-term (stay forever) rather than just through our lifetimes, and how every nation needs to work together to achieve this. Then the end of the song is optimistic (the future's bright).