1、"We're looking back farther in time to see where we are trending in terms of greenhouse warming," said Ballantyne.
4、This means that in a world where greenhouse warming is wetting the atmosphere, the lower parts of the atmosphere should warm at a greater rate than the surface, most notably in the tropics.
2、In a world where greenhouse warming gets stronger, the tropics expand-an effect the beginning of which has already been observed.
3、On Dec. 9, the journal Science published a paper providing a new ar gument that clouds are more likely to amplify greenhouse warming than counteract it.