Some species officially bid us farewell this year. They may have long been gone, but following more recent assessments, ...

A tiny fish long feared lost has resurfaced in Bolivia, offering a rare conservation success story amid widespread habitat ...

Not every extinct animal vanished in plain sight. Some disappeared into remote regions humans barely study. This list ranks ...

Reports that a rare Bolivian killifish thought to be extinct has been found alive would be a landmark moment for conservation biology, but based on the material available here, I cannot verify any of ...

As a critically endangered species, the manumea could be considered mostly dead, but there’s a big difference between that ...

Just because a species is presumed extinct doesn’t mean it’s gone forever. Here are four glowing examples of this unique, and felicitous, phenomenon. Not all species that have been classified as ...

It's the reptilian feel-good story of the year: A species of giant tortoise thought to be extinct for 150 years turns out to be alive and living on an even more remote island than the one from which ...

One of the proposals would require regulators to consider economic factors when designating a threatened species.