On our way towards a net-zero future, carbon literacy and low-carbon lifestyle are crucial. This textbook, as one of the “China and the World” textbook series for the Patriotic Education Center, covers the Science of Climate Change, identifying multiple causes and consequences; the Evolution of Climate Action, from the United Nations Stockholm Conference to the United Nations Climate Change Convention, from the Paris Agreement to the Sustainable Development Goals; the impact of our actions on climate change adaptation, mitigation; Hong Kong climate action and individual strategies to combat climate change. It aims to lead every student, school, family, and community to work together to initiate climate action for a better and more sustainable future.