Is global climate change man-made?

1. Is global climate change man-made?

When I firstly had read this question several weeks ago, I decided for sure that of course there is. Just look at our swift and impetuous technology developing. But after some wise and calm thinking, I recall story which I had read with my daughter the other days about dinosaurs. Actually we had read about dolphins and how they evolved from another creatures also dinosaurs which in accord with theory of evolution leave nearby water and slowly after several hundred million years became nice and beauty dolphin. It is known that dinosaurs varnish from the globe not by their own desire, but by some global change in climate.
So we can't take off totally from the scale of the discussion that climate change can be kind of inner process with has its own rules and law. Our globe is part of the solar system and solar system is part of the galactic and our galactic part of sort of super galactic and so on, and so forth. Modern science doesn't know for this time all this law or can't disclaim that climate change has its own curve of progress.
But, let's stop look in the deep past and try to look to the star. Let's regard last 100 years or so of the mankind development. Let's look how people travel hundred years ago, how they warm themselves and cook food and light thier way at night and ... Last hundred years was technology breakthrough in consumption of natural resources and intervention in the natural condition. During last 100 years mob which inhabit our globe not only increase exponentially but increase average temperature of the globe up to several degree.
Wasting natural sources, increasing level of the so called green house gas emission and intrusion into cell and atom to my mind lay covered spring which can initiate irrevocable and global climate change.