Entropy : Why is it Predicted to Cause the Heat Death of the Universe?

Heat death of the universe, also called The Big Chill or Big Freeze, will happen when the entropy of the universe will be so high that everything and everyone that lives in it will perish. This will happen because an organism living in the universe wouldn't be able to extract order from its surroundings, because the latter would be more disordered than the organism itself. The death of the universe can occur in more ways than one, and this is one of the ways that some researchers and space scientists theorize that could be the reason behind the end of the entire universe. Everything that has a beginning must also have an end. While we know the Universe sprung to life 13 billion years ago, we don't know when its illustrious journey will come to an end. What we do know is one of the ways it could happen. We call this plausible ultimate fate of the Universe Heat Death, and entropy is the culprit. According to the second law of thermodynamics, entropy in the Universe can only increase, and it is this increase that will eventually cause its demise. Entropy is also why we cannot generate infinite energy. But what is entropy? And why should it only increase? How does it prevent us from generating infinite energy? And most importantly, why should its increase lead to the apocalypse? In this short animated video for kids, we explain the concept of entropy in simple, basic language.