Today's climate change is a fact. But is this climate change really caused by us humans? The climate has not only been changing today; climate fluctuations—some significantly stronger and faster than today—have existed for at least 2.3 billion years. The author, Dr. sc. nat. Klaus-Peter Dahm, who has been closely following the discussion on climate change since 2008, examines the model of human-caused global warming on a strictly scientific basis using the current method of falsification and arrives at surprising results. In the second part, the author addresses the energy transition in Germany and also subjects the underlying assumptions to rigorous scientific scrutiny. The outcome is not flattering for our energy policy. Those who critically engage with the topic of "climate and energy" will find valuable insights here.