New Scientist

Research highlights impacts of military sonar devices on dolphin behaviour

Tiny, solid windows in the shells of heart cockles let in light for the photosynthetic algae inside them – and they could show us how to make better fibre-optic cables

Four southern giant hornets have been identified in northern Spain, leading to concerns that the species could harm native insects if it becomes widespread

Several populations of Mexican tetra fish that live in darkness have independently evolved to need hardly any sleep, but the reason why is a mystery

A genetic flaw dooms half of all crested newts to die before they hatch – now we know how this baffling evolutionary quirk came about

Evidence that animals mourn the death of loved ones is growing, but we should be wary of letting our biases cloud this topic, says philosopher Susana Monsó

Palaeontologists have pieced together the brain structure of a bird that lived 80 million years ago named Navaornis hestiae, thanks to a remarkably well-preserved fossil  

Eurasian reed warblers don’t just get a sense of direction from Earth’s magnetic field – they can also calculate their coordinates on a mental map

Campaigners are calling for stricter controls on rodenticides after finding that birds of prey in England are increasingly being exposed to high doses of rat poison

Never underestimate what a single gopher can achieve in a day: one of the burrowing mammals helped boost soil fungi in an area blanketed by ash from the explosive eruption of Mount St Helens in Washington state

Experiments show that illuminating the underside of a decoy seal reduces attacks by great white sharks, revealing a possible strategy to protect surfers and swimmers

An analysis of thousands of cognitive tests carried out by chimpanzees finds that the number of spectators influenced their performance in different ways depending on the difficulty of the task

Asian elephants at Berlin Zoo show impressive skill when using a hose as a tool, and even appear to sabotage each other by stopping the flow of water

When it comes to the survival of animals living in the wild, the characteristics of the group can matter as much as the traits of the individual, according to a study in marmots

The books, TV, games and more that New Scientist staff have enjoyed this week

Shortlisted for the Close-up Photographer of the Year contest, these images zoom in on animals in all their glory

Experiments where vampire bats were made to run on a treadmill have revealed how they extract energy from protein in their latest blood meal

DNA analysis suggests Pando, a quaking aspen in Utah with thousands of stems connected by their roots, is between 16,000 and 81,000 years old

Orca – Black & White Gold digs deep into the dirty waters surrounding the killer whale trade and captures a daring rescue mission

A fossil of a tadpole from Argentina is 161 million years old - and isn't that different from some modern species