About the Book: Do you know enough about the world's most pressing issues? Are you familiar with the consequences of climate change and methods for sharing the permissible carbon quotas? Are you aware that we are using up nature's capital and not just its interest, that world poverty is rampant and urgently needs to be reduced, and that the consequence of current US immigration laws is unsustainable population growth? WE HAVE TO CHANGE aims to highlight these issues, to make us stop and think seriously about them, and to encourage everyone to become actively involved in the global challenges facing the world today. It presents climate change, liquidation of nature's capital, world poverty, and unsustainable population growth together, in their interaction, in one concise volume. Author Maria Ronay reviews the world resources available, predicts the dangers ahead, and proposes courses of action for individuals and the world to mitigate climate change, preserve nature's capital, reduce world poverty, and stabilize the world's population by emphasizing existing United Nations programs. For the US carbon tax on gasoline and electricity invested in reducing atmospheric carbon and reforming legal immigration laws are recommended. About the Author: Maria Ronay was born in Budapest, Hungary, and immigrated to the United States for her marriage. She has a PhD in materials physics and spent her career at Columbia University, New York, and the IBM T.J. Watson Research Center in Yorktown Heights, New York. She has a grown son and lives in San Francisco.