The nature of the energy supply of the world is changing rapidly, driven by factors such as climate change, geopolitical tensions, growing populations, evolving lifestyles and aspirations, and advances in technology. This course will look at the energy landscape past, present and future, local and global; examine what sources of energy we have available with their pros and cons; and try to make sense of policies and decisions on energy use. There will, I expect, be lots of numbers and charts, but no technical knowledge will be required.