Have you used the words antwacky, jarg and squinny recently? Presenter Robin Lustig examines linguistic change and continuity in British English. He visits the Oxford English Dictionary, he gets a lesson in regional slang.

As he considers its future place in the world, Robin asks whether British English will still matter in a post-colonial, post-Brexit world.

(Photo: Man learning English via a computer. Credit: Getty Images)

Robin Lustig explores language change and diversity, as he asks whether English is fragmenting into multiple dialects or becoming increasingly uniform. In Kampala Robin polishes up his Uglish and he finds out how Hinglish, Tamglish and Spanglish are evolving in India and the US.

And everywhere he goes, Robin seeks out new words and phrases as he tracks linguistic change from social media and the streets through a California campus to the corridors of the Oxford English Dictionary. Sorting his memes from his muggles, spotting milkshake ducks and phubbing, Robin explores the future of English in the virtual world and the real one.

(Photo: A Spanglish sign which reads Vote Aqui Hoy. Credit: Getty Images)

Whether you learnt it at your mother's knee, at school or from a smartphone app, more than one and a half billion of us are speakers or students of English. It is the world's most widely used language but in the 21st Century English is being transformed. To investigate its diversity, vitality and future direction, Robin Lustig travels the world to find out if English is set to dominate or decline.

Robin begins his journey in the speech artificial intelligence labs of Silicon Valley and in conversation with tech entrepreneurs in Shanghai as he asks how computer scientists are engineering new ways of using and learning English. On campus at Stanford and the University of California, Berkeley, Robin asks whether advances in neural machine translation might one day replace English as a global lingua franca.

However, although technology is making English more accessible, it could one day break its grip on the globe. As Robin discovers, the future of English may be very different in an era when AI-powered ‘hearables’ can simultaneously translate between multiple languages.

(Photo: Woman with a smart phone selecting an English dictionary app on screen, while resting at home. Credit: Getty Images)

Could abortion be banned in the United States? Since the election of President Trump the question has taken on a new urgency, for both sides of America’s abortion wars. Philippa Thomas travels to two states which perfectly capture the debate – Texas and Kentucky – to explore, the past, present and future of this most controversial debate.

Finishing her journey in Washington, DC, in the third programme Philippa Thomas meets lobbyists on both sides of this issue, and visits the Supreme Court to watch the nine judges hear the latest major abortion case.

(Photo: Pro-life demonstrators (R) confront pro-choice counterparts (L). Credit: Karen Bleier/AFP)

Could abortion be banned in the United States? Since the election of President Trump the question has taken on a new urgency, for both sides of America’s abortion wars. Philippa Thomas travels to Kentucky, where a legal case is under way aimed at closing that state’s last clinic. She visits the lawyer trying to keep it open, and the opponents fervently praying for it to close. And she is invited to a smart suburb to see for herself one answer to the question often asked of anti-abortion activists: ‘well, what would you do?’

(Photo: Pro-choice advocates (right) and anti-abortion advocates (left) rally outside of the Supreme Court, Washington DC. Credit: Drew Angerer/Getty Images)

Could abortion be banned in the United States? Since the election of President Trump the question has taken on a new urgency, for both sides of America’s abortion wars. Philippa Thomas travels to two states which perfectly capture the debate – Texas and Kentucky – to explore, the past, present and future of this most controversial debate.

In the first programme Philippa visits abortion clinics in Texas to hear from women who have had abortions, and protesters who would like to stop them, about why this issue is so important. She hears from a doctor who performs abortions, a state lawmaker who would like to stop him, and an activist who wants to remove the shame about abortion. In the state capital, Austin, Philippa meets Sarah Weddington, the lawyer who argued the famous Roe versus Wade case which made abortion legal across America, and she hears how the reaction against that judgement helped create modern conservatism, modern liberalism, and elect President Trump.

Excerpts from Sarah Weddington’s oral argument in the Roe versus Wade case are provided by Oyez, a free law project by Justia and the Legal Information Institute of Cornell Law School, at www.oyez.org.

Photo: Pro-choice and pro-life activists demonstrate on the steps of the United States Supreme Court, 2016. Credit: Pete Marovich/Getty Images)

Half of the world’s river systems host hydro-electric dams. They offer reliable electricity but their construction forces people from their homes and disrupts the natural life of the river.

Scores of dams already span the Mekong River, the great waterway linking China to Vietnam. They’ve brought power and jobs to some of the most undeveloped parts of South-East Asia and the building boom shows no sign of ending. But the impact of the massive building programme on those living in the Mekong Delta and along the river is immense: silt deposits are disrupted and fish populations are displaced, as are many of the millions of people that depend on them.

Meanwhile, presenter Didi Akinyelure is in western Europe to find out why the countries that pioneered hydro-power are now turning their backs on it. In Switzerland they are releasing floodwater from their dams to bring life back to a tamed mountain wilderness. In France dams are actually being dismantled to revive fish life on Normandy’s rivers.

(Photo: Ota Khami, 55, stands where his home use to be before it was bulldozed to make way for the Sesan 2 dam in Stung Treng, Cambodia. Credit: Getty Images)

Life in the Himalayas is tough at the best of times. Crops are dependent on the seasonal melt-water from the mountain glaciers. If climate change wipes out the glaciers then the people will be forced to move.

(Photo: Didi Akinyelure on a glacier in the Swiss Alps)

An arranged marriage brought Yin Yuzhen to Inner Mongolia’s Ordos desert. Depressed by the sandstorms and poor productivity of the region, Yuzhen began to plant trees. Over 30 years she has planted a million trees in 70,000 hectares of desert. Those trees improved the soil and served as a barrier, blocking the sandstorms. She’s transformed the region, allowing a whole community to thrive in once uninhabitable conditions.

Didi Akinyelure travels to the Maowusu Desert to meet Yuzhen and the local farmers and officials who see her work as an example to the rest of China, a nation threatened by encroaching deserts and land degradation.

Image: Yin Yuzhen

Five of the Solomon Islands have disappeared, many more are becoming uninhabitable. For Kerry and Sally, climate change is not a theory - it is what has made them abandon their island and the graves of their ancestors. They see themselves as lucky - they had family land to move to and the skills to build new homes on stilts - but they are resigned to moving again.

Award-winning journalist Didi Akinyelure visits her home city of Lagos to find out the latest solution to sea level rise in West Africa. The glass towers of the new financial district of Eko Atlantic are protected from the waves by state of the art sea defences. The residents of the luxury apartments should keep their feet dry whatever the climate throws at them. That may be small comfort for their unprotected neighbours in the shanty town on the lagoon, Makoko, but they’re experts in survival against the odds.

(Photo: The sea encroaches on a tropical island. Credit: Getty Images)