COP19 web site: "during the last hundred years ... the sea level increased for the first time since the last ice age"; to stop/limit climate change, print on both sides of a sheet of paper

About Climate Change - COP19 - CMP9, Conference of Parties and climate change conference

Climate change is a natural phenomenon which has occurred many times before on Earth, and depends on factors such as: solar activity, the properties of the surface of Earth, and composition of the atmosphere.
There is no doubt that now another climate change takes place - during the last hundred years the average global temperature rose by 0.74°C[1], the sea level increased for the first time since the last ice age (over 20cm since 1870, and the pace of the increase is getting faster), glaciers melt and the snow cap of the Northern hemisphere decreases.
The climate change from distant history is attributable, above all, to the fluctuations of Earth’s orbit, Sun’s cycle and volcanic activity. These processes continue, but their influence on the observed climate change is generally too insignificant to explain the current situation (studies show that, for example, the Sun may be responsible for not more than 10% of the current global warming[2]).
...
What can be done to stop / limit the extent of the climate change?
...cell phone (laptop, shaver, etc.) chargers should not be left plugged in when charged.
...
Save water - by remembering to close the tap (also when brushing your teeth)
....
Save paper - by printing on both sides of a sheet of paper, using sheets of paper printed on one side for notes...