This course aims at understanding the multidimensional implications of climate change, from its origins to the Paris Agreement (2015) and beyond. The private sector plays a key role in achieving the transformational shift to a green economy, inter alia through market-based mechanisms and by developing and transferring new technologies. Hence the course examines the legal implications arising from the participation of the business sector, including mutually reinforcing combinations of public and private resources, in the achievement of climate change and sustainable development objectives. Another pillar of the course addresses selected international energy matters, such as the responsibility and liability regimes for oil spills, the legal challenges deriving from trade and investment in the energy sector and the development of renewable energies. The course adopts a critical approach to these very actual and cutting-hedge themes and requires an active participation in class, with a view to develop the students capacity to better understand and address today's challenges involving multiple jurisdictions and actors.