If its so easy to alter the climate why not test you theory on the moon or mars.

Because neither of these have what would be considered an atmosphere. The moon doesn't have one at all and the Mars atmosphere is almost non existent. It has about 1% of the density of the Earth's atmosphere.

If its so easy to alter the climate why not test you theory on the moon or mars..

You will be worried when hundreds of millions of Pajeets lose their freshwater source and start moving to Canada.