James Hansen — American Scientist born on March 29, 1941,

James Edward Hansen is an American adjunct professor in the Department of Earth and Environmental Sciences at Columbia University. He is best known for his research in climatology, his 1988 Congressional testimony on climate change that helped raise broad awareness of global warming, and his advocacy of action to avoid dangerous climate change. In recent years he has become a climate activist to mitigate the effects of climate change, on a few occasions leading to his arrest... (wikipedia)

We have known since the 1800s that carbon dioxide traps heat in the atmosphere. The right amount keeps the climate conducive to human life.
Global warming isn't a prediction. It is happening.
On a per capita basis, Britain is responsible for more of the carbon dioxide now in the atmosphere than any other nation on Earth because it has been burning it from the dawn of the Industrial Revolution.
It's as certain that as long as fossil fuels are the cheapest energy, we will just keep burning them.
Adding CO2 to the air is like throwing another blanket on the bed.