I gave up on immediate large-scale action when our oil soaked president was elected in a corrupt process. Watch the BBC Horizon special on Global Dimming.

Micheal Brothers, Saginaw, Michigan, USA

Ammadeus, get a life.

Dan, Staffordshire, UK

The consequences of global warming.
Scientists, all over the world, have been ringing the alarm bells for the last 30 years. Unfortunately, none of the world's leaders took their warnings seriously.
Now that we have reached the point of no return, they decided to address the problem. Reducing emissions by 20% or 50% is like putting a bandaid on a gangrenous wound!
If all emissions were halted tomorrow, the polar ice will continue to melt, causing the level of the seas, and oceans, to rise commensurately.
When the Titanic was slowly sinking, the captain of the ship was telling the passengers not to worry because the ship was "supposedly" unsinkable. So, let us continue to sing, and dance, while our planet is slowly drowning.
Amadeus Romer

Amadeus Romer, Melbourne, Victoria, Australia