Climate and environmental developments include new health warnings regarding wildfire smoke, legislative action on toxic herbicides, and ongoing controversies over environmental policy rollbacks.

New research indicates that wildfire smoke has become a more significant threat to prenatal health than traditional industrial and human-made air pollution sources.

California is moving to ban paraquat, a highly toxic herbicide linked to Parkinson's disease, despite pushback from farmers who argue the chemical remains necessary for agricultural operations.

Environmental groups report that while Florida has seen a record-breaking year for sea turtle nests, potential rollbacks of Endangered Species Act protections could jeopardize future recovery.

The Trump administration has officially ended the annual Arctic Report Card, a 20-year scientific initiative that documented the region's rapid warming and environmental transformation.

Heavy rainfall leading to the worst flooding in over 30 years has resulted in at least five deaths in Indiana, according to the National Weather Service.

Conservationists are protesting the use of heavy machinery for border wall infrastructure construction within Big Bend National Park, describing the ecological impact as devastating.

A study of 56-million-year-old leaf fossils refutes claims that increased fossil fuel-driven carbon emissions provide benefits to global forest health, demonstrating instead that such pollution is harmful.

The electric vehicle and sustainable energy sectors continue to hit milestones, including a record number of new solar power plants coming online in the U.S. and the first successful test flight of a large all-electric aircraft.