In front of an audience at the Contains Strong Language Festival in Leeds the poets, Lemn Sissay and Lebogang Mashile, and the curator Clare O’Dowd explore the transformative power of language, and the quest to break down barriers. Each morning the award-winning writer Lemn Sissay composes a short poem as dawn breaks, to banish his own dark thoughts and look forward to the day. The result is his new collection, Let the Light Pour In. Transformation is also at the heart of his retelling of Kafka’s Metamorphosis for the stage, in a touring production by A Frantic Assembly. The poet, performer and activist Lebogang Mashile explains how poetry has always carried political power in her native South Africa. Exiled as a child to the US she returned to Johannesburg after the end of apartheid. Her poetry highlights her sense of being an outsider and how verse is a vehicle in the fight for change. Divisions between the arts are broken down in the exhibition – The Weight of Words – at the Henry Moore Institute, Leeds (until 26th November). The co-curator Clare O’Dowd tells Tom Sutcliffe how the group exhibition explores what happens when poetry and sculpture intermingle and collide. Producer: Katy Hickman

The French archaeologist Ludovic Slimak has spent three decades uncovering evidence of ancient human life. In The Naked Neanderthal (translated by David Watson) he explores the last great extinction of a humanity that died out at the very moment Homo Sapiens expanded across the earth. The ingenuity, compassion and cruelty of Homo Sapiens are at the centre of Sebastian Faulks’s new novel, The Seventh Son. As scientists develop methods to genetically alter the human race, ethical questions arise, as do questions about how humans respond to difference. The American playwright Lauren Gunderson interrogates our relationship with AI in her new play, Anthropology, at the Hampstead Theatre, London (to 14th October). When Angie goes missing, presumed dead, her grieving sister Merril assembles the digital footprint she left behind, and builds herself a digital simulation. Producer: Katy Hickman

To mark the 75th anniversary of the NHS Kirsty Wark looks back at its formation, its current health and future prognosis with the medic and broadcaster Kevin Fong, historian Andrew Seaton, political commentator Isabel Hardman and GP Phil Whitaker. In ‘Our NHS’ Andrew Seaton explores the history of Britain’s ‘best-loved institution’, and how it has changed and adapted over the decades. Isabel Hilton focuses on the most critical moments in its 75 years in ‘Fighting for Life’. She talks to key decision makers from politicians to consultants, keyworkers to patients, to explore how the NHS has become a political battleground. Phil Whitaker has been a GP for more than 30 years. In ‘What Is A Doctor?’ he paints a damning portrait of political interference in medical treatment and what he sees as a worrying shift away from patient-centred care. As part of the BBC’s focus on the NHS the consultant anaesthetist Kevin Fong takes a step back to examine the roots of today’s problems, and possible solutions, in 'The NHS: Who Cares?' (on BBC Radio 4 from 10th July at 9am) Producer: Katy Hickman Start the Week is back on air on Monday 18th September

Sand, salt, iron, copper, oil and lithium are the stars of Ed Conway’s book, Material World. He tells Tom Sutcliffe how they built our world, from the Dark Ages to the present day. And how much the battle to secure them will shape our geopolitical future. The science writer Aarathi Prasad focuses on one of the world’s strongest biological materials ever known – Silk. In her latest book she explores the ancient origins of silk, its global reach, and how it continues to inspire new technologies – from pharmaceuticals to holograms. And materials and how different civilisations use them are at the heart of the British Museum’s exhibition, Luxury and Power: Persia to Greece (until 13th August). The curator, Jamie Fraser, highlights the perceived excesses of the Persian empire – with its abundance of gold, finely crafted pottery and frankincense – in direct contrast to the plainer tastes of their Greek victors. Producer: Katy Hickman

Kirsty Wark celebrates the artistry of numbers with three mathematicians Eugenia Cheng, Sarah Hart and Emily Howard. Eugenia Cheng asks Is Maths Real? in her new book, which offers a new way to look at the subject by focusing on the questions, rather than the answers. She explores how asking the simplest of questions – ‘why does 1 + 1 = 2?’ – can get to the very heart of the search for mathematical truth. Sarah Hart wants to break down the perceived barriers between mathematics and the creative arts. In Once Upon a Prime: The Wondrous Connections Between Mathematics and Literature she reveals the geometry lurking in Moby-Dick, George Eliot’s obsession with statistics, and Jurassic Park’s fractal patterns. Emily Howard has a dual passion for maths and music. In her compositions she plays with mathematical shapes and processes. Her new record Torus, released on NMC Recordings in April, brings together works including sphere and Compass. Producer: Katy Hickman