Astronomy and climate crisis: are we part of the problem or part of the solution?

Why should astronomers think and talk about the climate crisis? Is our research contributing to the global warming? Can we just ignore what is going on or are we and is our work affected? What can we do if we decide, as individuals and as community, that this is a global crisis that we need to address?The above questions move more and more to the forefront of the current discussion within our field, triggered not only by the impending climate crisis, which already today leads to an increasing number of extreme weather events, but also by our experience of being thrown into a different mode of work and communication during the pandemic. In this talk, I will try to address them from my perspective as an active astronomy researcher and attempt to offer not only a summary of some of the recent findings in this area for astrophysics, but also thoughts on how to be part of the solution instead of being part of the problem.