Global warming is the warming near the earth's surface that results when the earth's atmosphere traps the sun's heat. Global warming will affect weather everywhere, plants and animals everywhere, people everywhere; humans are warming the earth's atmosphere by burning fuels, cutting down forest, and by taking part in other activities that release certain heat trapping gases into the air.
Yes you are right that Global warming is a threat for us and all of us should think closely to this matter, if we want to safe our world then we should stop all this bad things which effects the weather.
It's a threat for everybody! All I can say is it's the people who made this Global Warming worst. One should protect his own home but people in this world forgot that they need to protect Mother Earth so it will protect us too!. People even forgot to do simple things so we can help Mother Earth. I wish they will think before it's too late.
I really don't care about, maybe I should because my children, grand-children and so on. I think that soon it will come but no more thinkings about that.
You're right about Global Warming, it's due mainly to the human activities (pollution from industries, exhaust fumes...). We must find alternative energy sources to tackle climate changes such as wind, electric cars, solar ... but of course the bigger problem is the cost.