It's strange but Placebo always seems to have a pretty realistic way of seeing pain and grieving. Here, they mention first the nature in the form of sky, sea and clouds. When we lose someone, we tend to think about the entire universe. What is out there and if the person that we miss might be somewhere lost along the lines. Then, we think about the world and what's it turned to. What is life like in this earth. We don't just think about the person, but about us and who we are. And what the entire world is.