Is climate changing? Can human activities explain these changes? Is climate change a significant problem? How would our Earth respond to these changes? In order to answer these questions, we need to understand the Earth processes that drive climate variabilities from the distant past to today. In this class, we will cover physical/chemical/biological processes that are fundamental for climate changes. We will review the climate changes over short and long time scale, understand climate drivers and feedbacks. We will also consider the implications of climate change for the global environment and humans. Intended to be accessible to students not concentrating in science or engineering. Students in climate change studies will get an integrative view on climate changes.