Icelandic authorities close Fjadrárgljúfur canyon to the public after it is overrun by fans following its appearance in a video by Justin Bieber.
Mary Nichols, chair of the California Air Resources Board, says that if the Trump administration rolls back the state’s aggressive clean-car standards, California might ban the internal combustion engine.
Xcel Energy will close its remaining coal-fired power plants in the Upper Midwest a decade early and add three gigawatts of solar capacity by 2030.
The EPA plans to alter the way it calculates health risks from the fine particulate matter released from coal-fired power plants, to make the air pollution appear less deadly.
The EPA stops funding research on environmental health threats to kids. | 
