How can mankind prevent climate change?
Firstly, it's important to distinguish between anthropogenic (man-made) climate change and non-anthropogenic (not man-made) climate change. Non-anthropogenic climate change is normal - the Earth's climate has always been in a state of flux. When people talk about climate change, they are most often referring to the anthropogenic type.
Anthropogenic climate change is a result of the increased CO2 emissions into the atmosphere. Yes, human beings caused that. Yes, we can reduce how much carbon dioxide we put into the atmosphere. However, we are not able to simply remove the CO2 that we've already added to the atmosphere. On top of that, we certainly cannot stop climate change in its tracks. A better question is: How can we adapt to the world as it stands and plan for a future of even more change? We should also be asking ourselves how we can help others (people who don't have the resources to help themselves) adapt to the world we made?
There are a number of ways by which we can do so:
1.Try to minimize use of non-biodegradable products such as plastics, polythene, etc.
2.Buy only CFC-free air conditioners/refrigerators to stop harmful gas emission.
3.At work, always try to convinve authorities(especially in industries) to install device such as scrubbers,plate towers,cyclone separators,elecrostatic precipitators(ESPs) to prevent emission of SO2,CO2,etc. to the atmosphere.
4.By minimizing use of private cars, and using bikes,carpool or just walking to your destination.
5.Make sure you are aware of the 3Rs - Reduce,Reuse,Recycle.
6.Actively participate in environmental debates and report to proper authorities if any development in the locality is unsustainable to the environment.
7.Eat more organic food, and try to construct landfills at your yard.