How many degrees has the average temperature gone up across the world in the last couple of years?

Question

How many degrees has the average temperature gone up across the world in the last couple of years?

Answer 1

In the last hundred years,it might have risen by approximately about 0.8 degree.

Answer 2

In the last couple of years (and since about the year 2000) the average global temperature has actually cooled about a half degree.  Only time will tell if this trend will continue, and for how long.  

Answer 3

the global average surface temperature has gone up 0.4 degrees Celsius in the past 25 years and there is an estimates that the average global surface temperature could climb anywhere from 1.4 to 5.8 degrees Celsius by the year 2100.