Celia Hatton

is so focused on Venezuela at the moment?

We've heard quite a lot of reasons coming from the Trump administration, but is their reasoning any more clear?

Will Grant.

Researchers monitoring shark populations in the Mediterranean Sea say some of the shark species are in danger of disappearing.

There's evidence some of the most threatened sharks are still being caught and sold in North African fish markets.

Our science correspondent Victoria Gill has the details.

The great white shark is one of more than 20 shark species in the Mediterranean that's protected under international law, meaning it's illegal to fish for them or to sell them.

But a conservation research team led by scientists from the American University Virginia Tech and the British conservation charity Blue Marine says that at least 40 great white sharks from the Mediterranean have been caught and killed since January.

That estimate comes from a project monitoring fishing ports on the coast of North Africa.

And the BBC has discovered and checked footage posted on social media this year of an adult great white being landed at a fishing port in Algeria and what appears to be a large short-finned mako shark, another protected species, being prepared for sale at a market in Tunisia.

It's not clear whether the animals have been accidentally caught in fishing nets or if they were targeted, but the researchers say much more needs to be done to protect a rapidly dwindling shark population in the Mediterranean, one of the most heavily fished seas on the planet.

Our science correspondent, Victoria Gill.

And last, lots of people follow in their parents' footsteps when choosing a career or even a hobby.

But how about this for an extreme example?

23-year-old Jamie Hargreaves from the English city of Derby has retraced his father's epic cycling trip from Derby in the UK to Derby Street in Sydney, Australia.

His dad, Phil, took the trip in 1984.

And with a few detours due to the modern political landscape, Jamie has just safely completed almost the exact same route.

Jamie spoke with Rebecca Kesby and explained why he did it.

You had to make a couple of detours.

You couldn't go through Iran, which I think your dad did back in 84.