Adding CO2 to the air is like throwing another blanket on the bed.

The trains carrying coal to power plants are death trains. Coal-fired power plants are factories of death.

Global warming has already triggered a sea level rise that could reach from 6 metres (19.69 ft) to 25 metres (27.34 yards).

Coal is the single greatest threat to civilization and all life on our planet.

The scientific excitement in comparing theory with data, and developing some understanding of global changes that are occurring, is what makes all the other stuff worth it.

The last time the world was three degrees warmer than today-which is what we expect later this century-sea levels were 25m higher. So that is what we can look forward to if we don't act soon.

I was lucky to grow up at a time when it was not difficult for the child of a tenant farmer to make his way to the state university.