You cannot stop climate change in a snap of a finger. it's going to be a lengthy process that may take centuries before any actual output will be observed. We can prevent it from worsening though by decreasing the sources of toxic gases. to do that it's either you will have to minimise or control some industries and factories or ask them to look and apply alternative ways of running their industry and factory that do not emit harmful gases as waste product. also we can all go green. plant more trees so that the carbon emission that goes up to the upper part of the atmosphere will be minimized. Encourage car companies to make eco-friendly cars. same thing for air conditioning products. large buildings could also be encouraged to plant greeneries on their rooftops and to utilize solar panels as alternative energy source.
Hope this helps. Good luck.
