Note, this song was written before global warming became a popular issue. Is it about that? Well great songs leave it to your interpretation. These lovely hippies came up with a metaphor, and it stuck. The lyrics don't appear anywhere google searches, so here they appear for posterity.
Every Iceberg Is Afire by Sky Cries Mary 1994
All the statues are headless
All the homeless are bedless
All the hungry are breadless
All the Commies, they are redless
All the heavens are starless
All the drunkards are barless
Streetwalkers are carless
All the big-talkers, they are cigarless
All the drug stores are drugless
All the Persians are rugless
Worst dressed are best list
Night clubs they got the guest list
Oceans are streetless
All the poets are beatless
All the dreamers are feetless
Let all the diseased be diseaseless
The whole world is moonshine
Everything's a pipe dream
Everyone's a shadow
Religions are smoke screens
The whole world's a wino
Oceans getting higher
We're all going swimming
Every iceberg is afire