Human-induced global warming is a SERIOUS problem, which could create all sorts of very nasty surprises in the longer term (nasty surprises as in destruction of arable land, famine, political unrest, even wars over natural resources, destruction of cultural heritage and so on).
We are clearly seeing signs of it happening already. The effects of global warming are not a continuous and steady process, they come sporadically, but with increasing frequency and severity. Ever more worse and longer heat waves, bigger and nastier storms, receding glaciers (which is a pretty obvious sign, just compare the pictures taken from some specific glacier 50 years ago and pictures taken today from the same spot).
People claiming humans have nothing to do with global warming are either outright liars (look who backs up the people claiming this is not true? oil companies and big corporations) or misled. Or in denial. It is true, it is happening, it should be dealt with. NOW.
What is needed is a massive, colossal investment into clean, renewable energy sources replacing our dependance on oil and other fossil fuels and also to the means mitigating the worse effects of global warming. Maybe even methods extracting the extra carbon dioxide from the atmosphere and turning it into something useful. Also more efficient recycling technologies and systems etc.
