Alisa Opar

A controversial firing at the California Coastal Commission has conservationists closely watching the agency that controls development along the state's shores.

Could invasive mosquitoes ignite Zika outbreaks on the West Coast?

Tiny, invasive East Coast parasites are leaving hordes of the living dead in their wake.

Montana is opening up more space outside of the national park for bison to roam.

Heavy El Niño rains could trigger mudslides in California this winter. These scientists are trying to figure out the whens and wheres.

Mass die-offs in the Pacific are sending the emaciated bodies of seabirds, seals, and sea lions ashore from California to Alaska.

An 18-year survey hints at how global warming may be changing the face of Danish bugs.

To kill or not to kill: How wildlife officials decide what to do with “problem bears.”

A should-do list for the president's three-day trip to Alaska.

Wildfires may be harming the health of people who live hundreds or thousands of miles from the flames.

How will Shell’s Arctic drilling affect marine mammals in the Chukchi Sea?

As summer heat compounds four years of drought, innovation has not yet run dry.

This Montana cattle ranch is trying to ensure its operations benefit wildlife—and yes, that means wolves, too.

To try and curb demand for black-market rhino horn, a bioengineering start-up is making 3-D substitutes.

While there’s no crystal ball for forecasting wildfire, experts have come to expect fiercer and more frequent blazes year after year.

The Obama administration maintains that the proposed international trade agreement would be good for the American people and the economy, but there's a reason all negotiations have been shrouded in secrecy.

Cattle that came over with Columbus might be better bovines for the drought-plagued West.

Benjamin Cook looks at ancient trees to forecast future droughts. His latest findings are not good news for the West.

Consumers are increasingly getting to know their local fish—and fishermen—through companies that cut out the middleman.