Global relationships that determine bird diversity on islands uncovered

The study, a collection of molecular data from bird species found across 41 oceanic archipelagos, reveals how the area and isolation of islands are key to determining the diversity of species they contain. It is known that biodiversity is unevenly distributed across the planet. But why do some islands such as the Galápagos and Hawaii … Read more

Sweet beaks: What Galapagos finches and marine bacteria have in common

The variety of finch species on the remote Galapagos Islands is the most prominent example for Charles Darwin’s and Alfred R. Wallace’s theory of evolution through natural selection. Galapagos finch species have developed distinct beak sizes and shapes and thereby have adapted to different food sources. This exemplifies how even closely related species can effectively … Read more

What birdsong tells us about brain cells and learning

Most scientists who study the brain believe that memories are stored through networks of synapses, or connections that form between neurons. Learning takes place as neurons form new connections and strengthen or weaken existing ones, giving the brain its so-called synaptic plasticity. There is growing evidence, however, that the intrinsic, built-in properties of the cells … Read more

Biodiversity scientists pull together to document how life works before it’s too late

Time is running out to predict how potential climate futures will impact biodiversity and the functioning of our biosphere. To save and predict the future of biodiversity we need to rapidly accelerate our understanding of the planet’s diverse forms of life. A new, global network of international researchers is using the power of open source … Read more

Computer-generated genomes

All organisms on our planet store the molecular blueprint of life in a DNA code within their genome. The digital revolution in biology, driven by DNA sequencing, enables us to read the genomes of the myriads of microbes and multi-cellular organisms that populate our world. Today, the DNA sequences of over 200,000 microbial genomes are … Read more

Biodiversity offsetting is contentious – here’s an alternative

A new approach to compensate for the impact of development may be an effective alternative to biodiversity offsetting – and help nations achieve international biodiversity targets. University of Queensland scientists say target-based ecological compensation provides greater certainty and clarity, while ensuring the management of impacts from projects like new mines, roads or housing estates directly … Read more

‘Ghost’ of mysterious hominin found in West African genomes

Ancestors of modern West Africans interbred with a yet-undiscovered species of archaic human, similar to how ancient Europeans mated with Neanderthals, researchers report. Their work helps inform how archaic hominins added to the genetic variation of present-day Africans, which has been poorly understood, in part because of the sparse fossil record in Africa and the … Read more

Hidden away: An enigmatic mammalian brain area revealed in reptiles

The state of unified perception characteristic of a conscious state in humans appears to require widespread coordination of the forebrain and thus, the existence of a physical and anatomical substrate for this coordination. The mammalian claustrum, a thin sheet of brain tissue hidden beneath the inner layers of the neocortex, is widely interconnected with the … Read more

Huge bacteria-eating viruses close gap between life and non-life

Scientists have discovered hundreds of unusually large, bacteria-killing viruses with capabilities normally associated with living organisms, blurring the line between living microbes and viral machines. These phages — short for bacteriophages, so-called because they “eat” bacteria — are of a size and complexity considered typical of life, carry numerous genes normally found in bacteria and … Read more