This book consists of selected papers from the 2022 4thInternational Conference on Environment Sciences and Renewable Energy, which was held as a fully virtual conference during May 27–29, 2022. The book overviews the latest progress in environmental and energy technologies with a specific focus on wind turbines and hydrogen production. In the field of environmental science, wastewater treatment, air pollution abatement, solid waste treatment, and general policy recommendations are discussed. Technology advances, especially in wastewater nutrients and micropollutant removal, are covered. In...