What is Science? -- Modes of Logic -- Modelling and Occam's Razor -- Theory, Model, and Law -- Defining Science -- Progress and Change in Science -- Answerable and Unanswerable in Science -- Why Does Science Exist? -- Doing Science -- The Beginnings of Science -- Studies -- Study Design -- Statistics and Studies -- Improving Study Reliability -- Pseudoscience -- Pseudoscience and Society -- Bad Science, Bad Scientists -- Case Studies -- Deconstructing Pseudoscience -- Energy and Entropy -- Definitions and Units -- Entropy -- Energy, Entropy, and Life -- Energy Flow in Society -- The Arrow of Time -- Electricity, Magnetism, and Light -- Magnetism and Force -- Electricity -- Faraday and Fields -- Maxwell and Light -- Vision and Light -- Measuring Light -- Spectral Lines -- Atom and Light -- The Electron -- Rutherford's Atom -- Blackbody Radiation -- The Photoelectric Effect -- Bohr's Atom -- The Quantum Atom -- Nuclear and Atomic Scales -- The Interaction of Light and Matter -- Climate -- Fossil Fuels -- Greenhouse Gases -- Energy Flow in the Environment -- Climate Modelling -- Implications of Climate Change -- Nuclear Energy and Radiation -- Into the Atom -- Nuclear Decay -- Nuclear Transmutation -- Health Effects of Radioactivity -- The Bomb -- Nuclear Power -- Nuclear Disasters -- Other Uses of Radioactivity -- Why Stars Shine -- A Finite Planet -- Population Growth -- Economic Growth -- Resource Management -- Beyond Carbon -- Electric Transport -- Outlook -- Space Travel -- Looking Out.