The ethically challenged acting director of the Bureau of Land Management made a tense appearance at the Society of Environmental Journalists conference last week to discuss his radical record.

In response to pressures from the international community, Mexico has agreed to take more steps to prevent the porpoises’ extinction — but with fewer than 20 remaining, will that be enough?

As remote Alaska warms and melts, it kicks off changes that will affect global systems and worsen climate change.

Tribal activists fear that permits to move the Keystone XL forward will bring not just economic and environmental impacts.

Mounting evidence proves that natural-gas and oil extraction threatens wildlife and ecosystems — much as it harms human health.

The public has long supported a state program to provide water for wildlife, but now human threats, including border-wall construction and climate change, are making a bad situation worse.

Successful conservation means more sharks, which is great for the health of the ocean but could also be problematic in a few important ways. Here’s how experts say we should prepare.

From Bogota to Baltimore climate strikers turned out for the first of a week of events to push for action on climate change.

In warming Alaska, Pacific walruses and Inuit craftsmen find themselves facing new and intersecting threats.

Will the Trump administration’s recent changes to the implementation of the Endangered Species Act complicate the delicate strategy of grizzly restoration in this remote Washington wilderness?