What is anthropocene and how do the human impact on the planet and ecosystems evolve? Science and policy aspects of environmental problems and climate change; post-normal science; ways of consensus in the scientific community; climate change denial campaigns. Basics of climate science and impacts of climate change. Climate policies, mitigation, risk reduction and adaptation. Carbon budget, low-carbon energy transition and decarbonization of the energy systems. International climate politics. Energy efficiency, renewables and transformation of the energy policies in the wake of global climate change. Air pollution, water scarcity and sustainability of the energy systems.