Sharks and rays are among the most data-deficient groups of species.
A landmark report found more than one million species at risk of extinction – but even the "safe" ones may not be so safe.
How many species still to name? That’s a good question.
New species are being discovered all the time, which only adds to the problem of knowing how many there are on the planet today. It also helps to know what we mean by species.
Callao Cave on Luzon Island in The Philippines, where the fossils of
Homo luzonensis were discovered.
Callao Cave Archaeology Project (Florent Détroit)
Reports say that a new species of ancient human has been identified in a cave in The Philippines. But only a few bone and teeth fossil fragments have been found, so far.
A palisade trapdoor spider of the new species
E. turrificus walks across the rainforest floor near Maleny, Queensland.
Trapdoor spiders that build unique burrows are found only in small areas of Queensland. But they don't travel very far from their location, and that could put them at risk.
The first Fernandina giant tortoise seen in over 112 years.
Galapagos National Park Directorate
From the reappearance of giant bees to sightings of clouded leopards – can we ever be certain that a species has died out?
Generations of giraffes.
It can actually be very tricky to define a species, but in the 1900s, scientists found a pretty good way.
The Kirstenbosch Botanical Garden in Cape Town, South Africa.
The colonial history of botanical gardens encouraged pride in indigenous flora and culture.
A 3D model of the skeleton of a European polecat. Penis bone (baculum) is highlighted in pink.
Charlotte A. Brassey
Our study used innovative 3D scanning and engineering-inspired computer simulations to understand the evolution of the penis bone in some mammals.
Birds don’t fly across wide Amazonian rivers like the Rio Negro.
Marcos Amend www.marcosamend.com (for use with this article only)
Rivers are natural boundaries for evolving populations. But scientists don't agree whether they create new species or just help maintain them. Research using birds' molecular clocks provides some answers.
Berzelia stokoei, one of the 3% of plants in South Africa that are found nowhere else in the world.
There is good news for plant conservation in South Africa and internationally.
Attenborougharion rubicundus is one of more than a dozen species named after the legendary naturalist Sir David Attenborough.
Simon Grove/Tasmanian Museum and Art Gallery
Scientists have been naming species after well-known people since the 18th century, often in a bid for publicity. But the issue deserves attention – 400,000 Australian species are yet to be described.
Some people thought Charles Darwin was suggesting that, over a very long period of time, apes turned into people. He was not.
The short answer is no. An individual of one species cannot, during its lifetime, turn into another species. But your question helps us think about life, evolution and what it means to be human.
Ondrej Prosicky / shutterstock
It is a delicate – and dangerous – moment for one of the world's most ecologically important nations.
Ulysses butterflies (
Papilio ulysses) in CSIRO’s Australian National Insect Collection, Canberra.
Australian taxonomy resources number around 70 million specimens, valued at over AU$5 billion. That's big science.
The US banned trade in salamanders for spreading a disease that threatened wild populations.
The fascination and admiration of the natural environment may draw people closer to it, but it's crucial to remain responsible about any desire to own a piece.
Newly recognised genetic populations carry their evolutionary history with them, and the history of their habits. This is why detecting new species is so important.
A new understanding of subspecies, such as Reichenow’s Helmeted Guineafowl, can help conserve the birds.
It's difficult to sort out the conservation 'wheat' from the 'chaff' when too many subspecies are defined.
There might have been as many as 160,000 types of dinosaur, give or take.
A simplified Tree of Life summarising the evolutionary relationships among a broad selection of living organisms.
Charles Darwin was one of the first to show connections in the variety of life by using a rough evolutionary tree. Things have developed quite a bit since then.
Coconut water may be the 'it' drink, but its producers face multiple threats.