Most of the panel’s members were appointed by the Trump administration.

The concentration of the greenhouse gas is now one-and-a-half times what it was before the Industrial Revolution, the World Meteorological Association says.

The changes would further restrict which scientific findings can be used in drafting regulations.

Most know Rachel Carson for her work on the dangers of chemical pollutants, but the writer’s earlier prose took readers on a tour of a mysterious underwater world.

The utility company PG&E has cut electricity to much of the Bay Area as a preventive measure.

Evidence is accumulating that breathing contaminated air might impair cognition.

Contaminants in the atmosphere appear to have harmful effects on neurodevelopment and cognitive function.

Researchers say the Open Agricultural Initiative promoted a high-profile project with misleading claims, and documents show it violated state environmental regulations.

A number of epidemiological studies support a link between air quality and poor health outcomes, and researchers are searching for explanations in the lab.