"Air pollution kills an estimated 600,000 children every year and causing symptoms ranging from loss of intelligence to obesity and ear infections but there is a limited amount parents can do, a World Health Organization report said on Monday."

"The United Nations shipping agency pushed back this week on any phased entry for tougher marine fuel rules and further tightened regulations that will come into force in 2020."

"A group of 20 U.S. states and several major cities on Friday urged the Trump administration to abandon a proposal to freeze fuel efficiency standards after 2020 and strip California of the ability to impose its own vehicle emissions rules."

"The research the Environmental Protection Agency (EPA) cited in proposing to roll back a major truck pollution rule was “not accurate,” the university that conducted the study has concluded."

"Last spring, air pollution researchers from around the world gathered to discuss their latest findings. Among them were scientists who led landmark studies linking smog and soot to deadly health problems. So it was shocking when one speaker essentially told everyone in the room that they were wrong."

"The Trump administration wants pollution limits on ship fuels that a United Nations maritime agency will implement in 2020 to be phased in to protect consumers from any price spikes in heating and trucking fuels, a White House spokesman said on Friday."