Many suggest we are approaching a sixth mass extinction event, and yet estimates of how many species exist, and thus how many might become extinct, vary by as much as an order of magnitude. There are few statistically robust methods to estimate global species richness, and here we introduce several new methods, including one that builds on the observation that larger species are often described before smaller species.

Ian Fleming’s famous fictional spy is renowned for being a bit of a love rat.

One of the world's iconic freshwater fish, the giant humpback Mahseer found in India, is on the brink of extinction, thanks to a conservation programme that has backfired, according to scientists.

Rena Gaborov was looking for gliders during a night-time survey in the East Gippsland forest near Bonang when she first heard the call. It stopped her in her tracks.

Climate change could drive up to a sixth of animals and plants on Earth to extinction unless governments cut rising greenhouse gas emissions, according to a US study published on Thursday.

The swift parrot, Australia's fastest nectar-eater, is suffering such a catastrophic population decline that conservationist biologists are pushing for the brightly-coloured bird to be urgently lis

Cats that live in the wild may be in danger. Scientists have found that almost half of the 36 species of felids that live in the wild in the world are at risk.

It turns out that our world's seas are quickly becoming ecosystems where species are at risk for extinction.

Recent studies show that current IUCN Red List assessment methods can identify species vulnerable to extinction because of climate change. But species must be assessed more completely and more regularly, and adaptation actions initiated swiftly once threatened species are identified.