Species are declared extinct when there have been no verifiable sightings for 50 years. Declaring a species extinct has implications for conservation efforts and policies.
The hardest to save will be five reptiles, four birds, four frogs, two mammals and one fish, for which there are no recent confirmed records of their continued existence.
More than half of all crocodile species are a high priority for conservation according to the assessment.
Only three specimens of the blue-grey mouse ever existed, and two are lost. We plunged into a search for the third, in the hope we might find the species isn’t extinct at all – just missing.
A new study shows that when free-ranging cats are more than a few blocks from forested areas in cities, such as parks, they’re more likely to prey on rats than on native wildlife.
Cockroaches have been on Earth far longer than humans and may outlast us. Here are a few reasons why.
‘De-extinction’ seems like a way to save dying or dead species - but in reality it’s an expensive and impractical waste of time.
John Woinarksi’s copy of this 1935 classic of environmental writing is older than him, mostly broken, much read and priceless.
NASA has only mapped 40% of the potentially dangerous asteroids that could crash into Earth. New projects will boost that number, and upcoming missions will test tech that could prevent collisions.
There are no more ivory-billed woodpeckers or Bachman’s Warblers on Earth, but they’ve left an echo behind.
We need to develop a ‘slow memory’ of how long-term developments have impacted us.
These iconic honeyeaters once ruled the flowering gum trees in massive numbers. But habitat loss means they’re on the edge of extinction.
A fundamental change in how North American zoos and aquariums are accredited supports their animal conservation and species survival work.
Genyornis newtoni was one of the biggest birds ever to walk the earth. And new research shows its mysterious extinction may have come amid a bout of widespread bone disease as its lake home dried out.
The paradise parrot was rediscovered by Cyril Jerrard, a Queensland grazier, in December 1921. But its return was fleeting.
Research has found that poetry can make people feel the urgency of climate change more keenly.
It’s been 80 years since the last undisputed sighting of the striking black-and-white bird. The U.S. government believes the ivory-billed woodpecker is extinct — but many will keep searching for it.
African states have an important role to play in promoting a total ban on nuclear weapons.
Humanity faces an extraordinary threat - why are so many of us not motivated into action?
The 15th UN biodiversity conference recently wrapped up the online portion of negotiations.