Researchers found a sharp rise in calls to US poison centers about magic mushrooms coincided with their decriminalization in several US cities and states.

Redwoods grow in networks that house unique communities of plants and animals high in the air. They offer life lessons about adapting over time.

Alarmingly, about half the people exposed to wildfires in Washington and Oregon were those least able to afford to protect their homes, evacuate safely and recover.

The largest dam removal project is moving forward on the Klamath River in California and Oregon. Tribal nations there have fought for decades to protect native fish runs and the ecology of the river.

Maine and Oregon have enacted laws that require makers of consumer product packaging to pay for recycling or disposing of it. Will other states follow?

What kind of evidence does it require to get a widely used chemical banned? A professor of medicine and former state regulator explains how the case for chlorpyrifos as a threat to public health developed.

More than 40 fire scientists and forest ecologists in the US and Canada teamed up to investigate why wildfires are getting more extreme. Climate change is part of the problem, but there’s more.

In principle, some portion of the shoreline is public land along virtually all US coasts. But these can sometimes overlap with private property interests, creating confusion and conflict.

The US has one of the highest groundwater use rates in the world. When wells run dry, households may opt to conserve water, find new sources or sell and move.

Two environmental engineers say governments need to do more to protect people from possible water contamination after wildfires.