Charlotte Gallagher

He also went out on boat to collect skin samples.

The test revealed vital clues about the health of humpbacks and other whales.

Researchers identified for the first time a highly infectious virus, one linked to mass strandings of whales and dolphins worldwide, affecting the animals in the Arctic.

Terry Dawson is Professor of Global Environmental Change at King's College London.

The drone technology is a real game changer in the ability to capture the blow samples from the whales and dolphins and through the analysis of those samples identify those diseases which obviously have huge impacts on the health and well-being of the animals and to understand why we're seeing these mass stranding events around the world.

Scientists hope this breakthrough will help them to spot other deadly threats to ocean life early before they start to spread.

Helen Briggs.

Finally, ever since the early days of the Beatles, Paul McCartney's signature instrument has been the Hofner violin bass guitar.

In 1961, the then 18-year-old bought the instrument in Hamburg for around $40, and it went on to feature on all of the band's first recordings, earning it the nickname The Beatle Bass.

It was actually stolen from a van in West London in the 70s and found decades later in

in an attic in the south of England and reunited with the rock star.

But now the manufacturer, which was founded in 1887, is going out of business.

Hoffner's filing for insolvency comes at a time when many instrument makers are struggling.

Here's Julie Robbins, the CEO of Earthquaker Devices, which makes guitar pedals in the US.

When I think of Hofner guitars, I think of the Beatles, you know, an iconic European brand.

They've been around for more than 100 years.

Many, many models.

A month or so ago, G&L went out of business.

That was a big brand.

that had been around for a long time in the U.S.