The Peruvian government has declared a health alert along the country's northern coast and urged people to avoid long stretches of beach, as it investigates the mysterious deaths of hundreds of dolphins and pelicans.

Maritime scientists in Peru are trying to solve a mystery that has turned stretches of the country's beaches into a grim dolphin morgue.

Scientists and Peruvian officials are investigating a mass die-off of hundreds of dolphins along the South American country's coast.

Morton Subotnick was a 1960s pioneer of classical electronic composition, using his Buchla modular system to access unique tones and timbres, rather than approximate the sounds of acoustic instruments.

Scientists are arguing that dolphins are so clever they should be treated like humans. But why stop there? Simon Usborne salutes the smartest species

Marine biologists and philosophers have joined forces to support a controversial declaration of rights for whales and dolphins because their astonishing intelligence and emotional empathy makes them equal to humans.

Marine biologists and philosophers have joined forces to support a controversial declaration of rights for whales and dolphins on the grounds that their astonishing intelligence and emotional empathy puts them on a par with humans.

Anna Calvi, Ghostpoet and Leslie Feist all made great albums this year. Here, they and others pick the music that rocked their year

Activists, angry at a killer whale's continuing captivity in a Florida theme park, are off to court

Tonight’s set consists mostly of trance-like drum 'n' bass tracks, accompanied by over-zealous, fit-inducing strobe lighting and the kind of heavy, reverberating bass that makes you feel like someone’s blowing raspberries on your intestines. But James Blake’s attention to detail and extensive repertoire mean he appeals to more than just fans of heavy bass lines and break beats.

The number of long-term unemployed has more than doubled since the financial crisis struck in 2008, leaving tens of thousands of people with little chance of ever working again, according to the Institute of Public Policy Research.

The court case that could never be won