"Laudato Si'" is an encyclical letter written by Pope Francis in 2015. It addresses the environmental crisis and emphasizes the need for global action to protect our planet. The document calls for a deeper understanding of the interconnectedness of all creation and highlights the moral responsibility to care for the Earth. The encyclical discusses various issues, including climate change, pollution, and biodiversity loss. It encourages individuals, communities, and governments to adopt sustainable practices and promote social justice. By fostering a sense of stewardship, "Laudato Si'" aims to inspire a collective effort to create a more sustainable and equitable world.