In Climate Change: Answer added to topic Science.Helena Goote Not to judge everyone that says whole heartily yes, but I think we don't know. And I will explain myself below.To begin, do I think that our actions affect the environment? Yes. Can these actions increase the temperature we experience on earth? Again, yes. Do we have proof that this is actually happening? To some degree, although statistical evidence is in itself somewhat questionable. Do we understand the bigger picture, all outside fources, the complete dynamic model of life on earth? No!In my opinion this topic of global warming is a small part of something bigger, we  just don't understand, and that is keeping us from really understanding what is going on. Many of the "proof" we use now, would have been called magic or fantastical in many era before us, and perhaps thus in the era following.A couple of years ago, acid rain was the most important thing we should focus on, and now see what happened with the subject: it is replaced with something we find more important now.I just do not see how we can judge based on so much incomplete data of what happened before, how temperature is adjusted based on movement, life on earth or any other aspect. As there have been many black swans, or unexpected events with large impact on human life, how can we say we know what is causing what we see today?That nevertheless does not mean we can not see the one-sided effect of just our actions, and try to see what happens if we alter our behaviour. I just object to the absolute agreement and conviction that they know what is right.It could be that we find out in 2000 years time, that we were complete ignorant, and that we made it worse (or not), just like we used to think, and prove, that the sun evolves around the earth.See question on Quora