An analysis of federal data shows a pronounced decline, despite alarming conditions found at some manufacturers.

Weather modification practices have become a political target. But a different story has been playing out in the West.

A longstanding push for urgent action on environmental toxins is landing in an unprecedented time in American politics.

It was thought that Aedes aegypti could not survive in the Mountain West. But now, a population is thriving in Colorado.

The explosion of populations east of the Mississippi was made possible by logging and the slaughter of wolves.

State health officials appear to have deviated from the usual response during an outbreak after it killed two infants.

Some experts believe CKD is the first chronic illness directly linked to climate change. Prevention may be possible.

Regulations make it hard to introduce organisms that quash invasive species. Some experts see missed opportunities.

Since reports emerged earlier this year that dairy cows across the country had been infected with H5N1 bird flu, the prospect that the virus could evolve to spark another pandemic has stoked serious ...

In “Metamorphosis: A Natural and Human History,” science historian Oren Harman indulges our collective obsession and expands its frontiers in startling ways. Inspired by the impending birth of his own ...

Carbon dioxide has a terrible reputation. It’s much maligned because of its role as a biosphere-threatening pollutant, but in fact the atmospheric compound has been a critical driving force behind the ...