But little happened until the 1980's, when global temperatures started to rise.

And while this goes on, the global temperature will rise.

It's almost like trying to measure the global temperature of the earth.

For the last nine years since 1998, global temperature on earth has remained the same.

The classic example is the very term "average global temperature".

In the past century, average global temperatures have risen about 1 degree.

"which would show that global temperatures had warmed up over the past 150 years."

One hypothesis is that the global temperature will continue to rise.

During this period, a sharp drop in global temperatures took place.

A.: Even small changes in the average global temperature can have dramatic consequences.