GW : Can we minimise the rising temperature ??

The only way to stop the global warming is to put breaks on the running temperatures. But are we sure its possible, when the technology has advanced to an stage from where it can't be reversed.

According to the studies, if we have to stop the temperature from increasing by 2 deg. celcius till 2050, then every year we have to decrease the consumption of greenhouse gases by 7 million tons. Now the question arises .... "Is this possible"???