Global Warming, Global Warning

I recently read an article about global warming and the lastest discoveries about the issue and I got really shocked about the fact then we have only 4 years left to save the planet. This was the declaration made by a climotologist of the United States who works for Nasa. This specialist has spent the last 20 years studying global warming and the green house effect caused by carbon dioxide emissions.
Another information that caught my attetion was that he was banned by the government authorities of the US and the UK in different oportunities for the declarations he made as regarding global warming. But now, he is not treated like that, but as the best specialist on climate change. What made the governments of UK, US and several other countries to consider him to be right on what he declares is the fact that it has been proved that he is telling the truth. It is truth what he predicts as it is truth what he said in the past.
The warnings of this man were listen by few people. And not so many countries joined with him in his fight against global warming. Now, we are suffering the consequencies of that. We are near the deadline, and just now we decided to listen. This is tipical of our kind, to listen to the truth and act when we are in real danger, near the end, insted of preventing.
We finally decided to listen to the ones who know about climate change, but this is only the very first step. What follows now is to act, and we should do that quickly.