Public Finance is a part of multi-disciplinary scientific field focusing on challenging issues that are significantly important for the common good of humanity. Since the appearance of the states, public goods, public services, and public policies have been developed for the wealth and goodness of people all over the world. Although the privatization process has gained significant speed since the era of Neoliberalism, the state power collaborating with international monitoring institutions to struggle against challenging issues is needed now more than ever. Therefore, public economics should be focused on the new challenging issues such as pandemics, global warming and climate changes. This book evaluates the economic and social impacts of new challenging issues in public economics. The new challenging issues in public economics, such as global warming and the global pandemic, have directly affected the world economy in terms of the economic units, institutions and social life. Therefore, this book is appropriate for social science scholars, government officials, policy makers and, businessmen of international companies that focused on environmental policies, and more.