As the Chinese Communist Party celebrates its 100th anniversary, Celia Hatton looks at how party slogans reveal the turbulent history of modern China. Throughout its existence, the party has used key slogans to communicate policy and mobilise the country's vast population. These messages reflect not just the ambitions of party leaders but also have a profound impact on the lives of millions. Using the BBC archive Celia examines the story behind eight key Communist Party slogans, from their early years as a guerrilla movement to the campaigns of China's current all-powerful leader Xi XInping.

Contributors: Professor Vivienne Shue, Dr Jennifer Altehenger, Dr Olivia Cheung, author Lijia Zhang, Dr Rowena He, and New York Times correspondent Christopher Buckley.

Presenter: Celia Hatton

"I couldn't stand back anymore and just watch people die."

In September 2020, drug policy activist Peter Krykant decided he'd had enough. The former heroin addict, turned frontline campaigner, bought a minivan and kitted it out with sanitisers and needles, a supply of naloxone- the medication used to reverse an opioid overdose- and a defibrillator.

He parked it in Glasgow's city centre and opened its doors to homeless drug users who are most at risk of overdose.

The van is operating as a drug consumption room (DCR), which are widely used in Europe and North America. But in Britain they're considered illegal under the 1971 Misuse of Drugs Act, though legal experts dispute that.

Scotland now holds a per capita death rate three times higher than anywhere else in Europe, tallying six straight years of record-setting, drug-related deaths. The SNP government has expressed support for bold initiatives, like DCRs, but claims its hands are tied by Westminster.

A few years ago the Home Office had stepped in to halt plans for permament site in Glasgow. Since then DCRs have been at the centre of fierce debate.

For Peter Krykant, setting up the van is not just about saving lives, but challenging drug policy.

Presenter Dani Garavelli recorded with Peter at the van over eight months, getting to know him, his family and the users who rely on the service.

Producer: Caitlin Smith

Meet Velma: a cat with attitude. (Possibly...)

And her owner, ​comedian Suzi Ruffell, who adores her pet - but thinks she's been getting a tad tetchy since they started spending more time together during the past year's various lockdowns.

Is Suzi just projecting her own feelings onto an unsuspecting animal, or are those pointed stares a sign that Velma's passing frosty judgement on her owner's life choices?

Together, they embark on a journey of discovery to find out more about cat behaviour and cognition, the world of feline research and the bond between cats and humans.

And of course, to discover the answer to Suzi's burning question: is her cat judging her?

Presented by Suzi Ruffell

Featuring excerpts from:

Struggling to find words might be one of the first things we notice when someone develops dementia, while more advanced speech loss can make it really challenging to communicate with loved ones. And understanding what’s behind these changes may help us overcome communication barriers when caring for someone living with the condition.

When Ebrahim developed Alzheimer’s Disease, for example, he’d been living in the UK for many years. Gradually his fluent English faded and he reverted to his mother tongue, Farsi - which made things tricky for his English-speaking family who were caring for him. Two decades on, his son, the journalist and author David Shariatmadari, seeks answers to his father’s experience of language loss. What can neuroscience reveal about dementia, ageing, and language changes? Why are some aspects of language more vulnerable than others - and, importantly, what are the best approaches to communicating with someone living with dementia?

David reflects on archive recordings of his dad, and speaks to a family in a similar situation to theirs, to compare the ways they tried to keep communication alive. And he discovers there are actually clear benefits to bilingualism when it comes to dementia: juggling two or more languages can delay the onset of symptoms by around four years. So while losing one of his languages posed practical difficulties for Ebrahim, it’s possible that by speaking two languages in the first place, he was able to spend more valuable lucid years with his family.

Presented by David Shariatmadari and produced by Cathy Edwards

A year after rough sleepers were given emergency accommodation during the first coronavirus lockdown, has the unprecedented operation had a lasting impact?

In March 2020, Simon’s life was transformed, from sleeping in shop doorways in Manchester to an en suite room at the Holiday Inn. He was one of thousands of homeless people across the country offered somewhere to stay as the Covid-19 pandemic reached the UK. The highs and lows of Simon’s experience were captured in Radio 4’s The Homeless Hotel as he dealt with the challenges of his addictions, illness, and the fear of ending up back on the streets.

In Return to the Homeless Hotel, reporter Simon Maybin asks where Simon is now. What’s happened to the hotel? And has the radical approach to accommodating people who are street homeless resulted in a radical reduction of rough sleepers - or a return to the status quo?

Reporter/producer: Simon Maybin

Frank and fearless teenagers from Company Three youth theatre spent 2020 making a time capsule of their lives in lockdown, from the day their schools shut down to the present. Re-cording on their phones, they created lively, intimate scenes from family life, reflecting on what it means to come of age without the usual rites of passage like exams and school leaving parties. They have lost much - but, as the year went on, they found sides to themselves that took them by surprise, and a new appreciation of relationships with other. Presented by Kezia Adewale and Shilton Freeman, the programme includes songs, jokes, sound recordings and thoughts from many other members of Company Three.

Sound design and composition: Jon Nicholls.

Producer: Monica Whitlock

Music can make us feel happy and sad. It can compel us to move in time with it, or sing along to a melody. It taps into some integral sense of musicality that binds us together. But music is regimented, organised. That same 'sense' that lets us lean into Beethoven makes a bad note or a missed beat instantly recognisable. But does that same thing happen in the minds of animals? Can a monkey feel moved by Mozart? Will a bird bop to a beat?

Do animals share our 'Sense of Music'?

Charles Darwin himself thought that the basic building blocks of an appreciation for music were shared across the animal kingdom. But over decades of scientific investigation, evidence for this has been vanishingly rare.

Fresh from his revelation that animals' experience of time can be vastly different to our own, in the award-winning programme 'A Sense of Time', presenter Geoff Marsh delves once more into the minds of different species. This time he explores three key aspects of musicality: rhythm, melody and emotional sensitivity.

Geoff finds rhythm is lacking in our closest relatives, the chimpanzees. But it's abundantly clear in a dancing Cockatoo, and internet sensation, named Snowball. He speaks with scientists who have revealed that birds enjoy their own music, but may be listening for something completely different to melody. And Geoff listens to music composed for tamarin monkeys, that apparently they find remarkably relaxing, but which sets us on edge.

In 'A Sense of Music', discover what happens when music meets the animal mind.

Produced by Rory Galloway

One year on from the toppling of the Colston Statue in Bristol, Descendants asks... how close is each of us to the legacy of Britain's role in slavery? And who does that mean our lives are connected to?

Yrsa Daley-Ward narrates seven episodes telling the stories of people whose lives today are all connected through this history.

The story begins with Jen Reid – whose image first captured attention of the national and international press after a replacement statue of her appeared on the plinth where Colston once stood. In the first episode, we discover the connection between Jen's ancestors in Jamaica and another family 3000 miles away in Detroit. Scrolling backwards and forwards in time, their stories span 200 years and take us on a journey from a plantation field in Jamaica to a football pitch in Scotland and a connection to a legendary figure of the 20th century.

Producers: Polly Weston, Candace Wilson, Rema Mukena

It was 1994, and legendary techno duo Slam were booked to play an event in Disneyland Paris. “We had a couple of days to kill, and a friend got in touch to say he knew these two young French musicians who wanted to give us music they’d made.”

The “young French musicians” Thomas Bangalter and Guy-Manuel de Homem-Christo were still in their teens at that point, and Daft Punk was under a year old. Stuart McMillan distinctly remembers hearing their 4-track demo for the first time; “We were blown away!”

Composed of Orde Meikle and Stuart McMillan, Slam launched independent electronic record label Soma in 1991. It had a very DIY ethos. Along with manager Dave Clarke, they’d overseen a number of influential releases. It was Slam’s own track ‘Positive Education’ that piqued Thomas and Guy-Manuel’s interest. They recognised Slam as kindred spirits, and Soma as the label they wanted to launch Daft Punk, and that's when things went really wild.

This is the story of Daft Punk's earliest beginnings on Glasgow's techno scene.

Narration written by Kirstin Innes

One night in 2012, Anthony Grainger went out and never came home. He was shot dead by Greater Manchester Police in an operation beset with errors and blunders. Why is his family still fighting for accountability?