Poo.

Not just any old poo you understand, but the poo of a Sperm Whale. Apparently each of these giant beasts erm...."releases" 50 tons of iron rich faeces into the ocean every year.
"So what?" I can hear you saying, "for god's sake, now he's talking about whale poo". be quiet at the back there and I'll explain.
The whale poo is used as food by tiny marine plants which, it appears, counteract the modern day's most notorious and publicised evil. No, not Jamie Redknapp, not this time, it's carbon dioxide.
What the unwitting beasts are doing is reducing their carbon footprint, and for a creature wihout feet, that's pretty impressive.

Full story here.

A Sperm whale yesterday, shortly after doing a poo.

"Aaah"