Research tells us that we need sustainable forest practices. But how does this knowledge lead to action?

This year’s list includes a notable extinction caused by climate change — and several caused by introduced predators.

Ecosystems have also come under threat from toxic plants whose spread has been difficult to control during the Russian invasion.

Tiny pygmy hogs almost went extinct a few decades ago, but a dedicated conservation team is helping give them a second chance.

This “living fossil” has survived in the South American Andes for millennia, but now faces an uncertain future due to climate change, fires, and voracious European animals.

As ecologists debate what to do about “invasive” swans in New York City, volunteers fight to keep them alive.

Scientists also declared several other extinctions, including the first documented plant extinction in New Hampshire.

Climate change, drought, and fires — all caused or worsened by human activity — are rewriting the future of ancient Sonoran saguaros.

The North American plants look pretty, but they also causes havoc in places where humans have allowed them to spread.

These unique ecosystems face threats from invasive species, development and pollution.