We all get that sinking feeling when we accidentally delete a valuable photo or document, but there's now a good chance you can find a backup copy - thanks to the Cloud.

Cloud computing has drifted into our lives without many people even realising - apart from those irritating emails, offering to sell you ever greater amounts of storage space. Some laptops now have very little memory built-in, and rely on the Cloud to store files. But where does it all that information go? What does the Cloud look like and where exactly is it? How are vast amounts of computer memory and processing power being put to use? And are those precious photos of your pet cat being kept securely?

Technology has already completely altered our lives, and Artificial Intelligence may transform our world to an even greater degree. This series is your chance to get back to basics and really understand key technology terms. What's an algorithm? How does Broadband work and what exactly is Blockchain? What's the difference between machine and deep learning in artificial intelligence, and is it just our jobs under threat, or is it much worse than that? And before we get to the destruction of humanity, should we all be using Bitcoin? Our experts will explain in the very simplest terms everything you need to know about the tech that underpins your day. We'll explore the rich history of how all these systems developed, and where they may be going next.

Presenter: Spencer Kelly

You're probably reading this on a device connected to the internet, while listening to this episode. But how did the digital files that make up this description, and the digital sound files that you can hear, appear, on demand, on your phone, tablet or other device?

Technology has already completely altered our lives, and Artificial Intelligence may transform our world to an even greater degree. This series is your chance to get back to basics and really understand key technology terms. What's an algorithm? where is "the Cloud" and what exactly is Blockchain? What's the difference between machine and deep learning in artificial intelligence, and is it just our jobs under threat, or is it much worse than that? And before we get to the destruction of humanity, should we all be using Bitcoin? Our experts will explain in the very simplest terms everything you need to know about the tech that underpins your day. We'll explore the rich history of how all these systems developed, and where they may be going next.

Presenter: Spencer Kelly

Do you know your Blockchain from your Bitcoin, or your Virtual reality from your Augmented Reality? Are you clueless about AI but are worried it might take your job?

If so, you’ve come to the right place.

Welcome to Understand: Tech and AI.

The pace of change in technology is daunting - and new developments are happening all the time. Artificial Intelligence has exploded into the public consciousness. So it’s ever-more important for us to understand where these technological enhancements are coming from and how we can best use them.

In each episode we'll demystify all the technology that’s become part of all our daily lives, and take the sting out of those buzzwords that tech companies are so fond of.

On Understand Tech and AI we’ll take one concept per episode, explain what it is and what it does - without any technical jargon - so that you can get a better grasp of the technology that’s in your hand, on your desk or in your living room.

Welcome to Understand: Tech and AI from BBC Radio 4. Subscribe now on BBC Sounds.

Presenter: Spencer Kelly

The rising cost of living really brought home how those big, global economic shocks can mean some pretty bad bumps for our individual finances. Probably the most obvious, immediate and, painful way that global economic events hit our household budgets is through the price of energy. In 2022 we saw our bills almost double - causing the government to step in and guarantee energy prices, with the Treasury picking up the rest of the tab. Even with that support, many people are struggling and we’re all paying a bit more attention to our bills. How does the market for energy work? Exactly what are we paying for, who sets the prices and why are our bills so much higher? And where did it all begin: economic historian Dr Victoria Bateman gives us a brief history of the National Grid.

Everything you need to know about the economy and what it means for you. This podcast will cut through the jargon to bring you clarity and ensure you finally understand all those complicated terms and phrases you hear on the news such as Inflation, GDP, National Debt, energy markets and more. We’ll ensure you understand what’s going on today, why your shopping is getting more expensive or why your pay doesn’t cover your bills.

Guest: Mike Waterson, Emeritus Professor of Economics at the University of Warwick

A BBC Long Form Audio Production for BBC Radio 4

The cost of living crisis is putting more pressure on more people - but what happens when that pressure becomes too much, and is bankruptcy always a bad thing? Professor Diane Coyle explains the processes and wider economic impact of bankruptcy, and Dr Victoria Bateman takes us back to the very beginning of the idea in the time of Henry VIII.

Everything you need to know about the economy and what it means for you. This podcast will cut through the jargon to bring you clarity and ensure you finally understand all those complicated terms and phrases you hear on the news such as Inflation, GDP, National Debt, energy markets and more. We’ll ensure you understand what’s going on today, why your shopping is getting more expensive or why your pay doesn’t cover your bills.

Guest: Professor Diane Coyle, the Bennett Professor of Public Policy at the University of Cambridge.

A BBC Long Form Audio Production for BBC Radio 4

Politicians talk about government debt a lot. When Prime Minister Rishi Sunak promised to tackle Britain's five most pressing problems, he included making sure our debt was falling. But what is the debt? In this episode Dr Gemma Tetlow explains why we have the debt at all, how much we owe, who we owe it to, and whether we should worry about it. Plus Dr Victoria Bateman takes us back in time to hear about historical debts we are still repaying today.

Everything you need to know about the economy and what it means for you. This podcast will cut through the jargon to bring you clarity and ensure you finally understand all those complicated terms and phrases you hear on the news such as Inflation, GDP, National Debt, energy markets and more. We’ll ensure you understand what’s going on today, why your shopping is getting more expensive or why your pay doesn’t cover your bills.

Guest: Dr Gemma Tetlow, Chief Economist at the Institute for Government

A BBC Long Form Audio Production for BBC Radio 4

Collectively, our individual financial decisions have a big impact on what the wider economy does. That includes how we manage our own money, including what we buy and how we buy it. One way we make large purchases, smooth out big bills and sometimes just spend some cash we can’t afford - is credit. In this episode Dr Victoria Bateman looks back to the Tallyman in the 19th century, a very early way of shopping with credit. We’ll explore what exactly credit is and how we use it.

Everything you need to know about the economy and what it means for you. This podcast will cut through the jargon to bring you clarity and ensure you finally understand all those complicated terms and phrases you hear on the news such as Inflation, GDP, National Debt, energy markets and more. We’ll ensure you understand what’s going on today, why your shopping is getting more expensive or why your pay doesn’t cover your bills.

Guest: Prof John Gathergood, Professor of Economics at the University of Nottingham

A BBC Long Form Audio Production for BBC Radio 4.

This programme has been edited to change a section of music.

On one hand, we’ve all experienced the things we buy getting more expensive, from the price of fuel to a tub of butter. On the other hand, retailers desperately try to entice us to buy with discounts. Shops seem to constantly have their ‘best ever’ sales and there are days like ‘Black Friday’ when prices are slashed.

In this episode, Felicity Hannah speaks to Rupal Patel, Economist at the Bank of England, to de-mystify how prices work and figure out who has the power in the buyer seller relationship. Dr Victoria Bateman, economic Historian from the University of Cambridge brings us the history of bulk buying.

Everything you need to know about the economy and what it means for you. This podcast will cut through the jargon to help you understand the complicated terms and phrases you hear on the news. Inflation, GDP, National Debt, energy markets and more. We’ll ensure you understand what’s going on today, why your shopping is getting more expensive or why your pay doesn’t cover your bills.

Guest: Rupal Patel, Economist at the Bank of England and co-author of ‘Can’t we just print more money? Economics in Ten Simple Questions’

A BBC Long Form Audio Production for BBC Radio 4

Why are the rich, rich and the poor, poor, and was it always this way? Tim Harford explains what’s happened to inequality over the last 100 years in the UK and why things might be better than you think. Economic historian Victoria Bateman explains the surprising effect The Great Plague had on income and gender equality.

Guest: Xiaowei Xu, Senior Research Economist at the Institute for Fiscal Studies

Producer: Phoebe Keane

Researchers: Drew Hyndman and Kirsteen Knight

Editor: Clare Fordham

Theme music: Don’t Fret, Beats Fresh Music

A BBC Long Form Audio Production for BBC Radio 4

The reason we can eat pineapples and sell aeroplane parts. But why might the value of the pound fall and what does that mean if it does? Tim Harford explains who wins and who loses if the pound is cheap against the dollar and economic historian Victoria Bateman tells the story of a trade deal with Portugal that flooded England with wine and Port.

Everything you need to know about the economy and what it means for you. This podcast will cut through the jargon to bring you clarity and ensure you finally understand all those complicated terms and phrases you hear on the news. Inflation, GDP, Interest rates, and bonds, Tim Harford and friends explain them all. We’ll ensure you understand what’s going on today, why your shopping is getting more expensive or why your pay doesn’t cover your bills. We’ll also bring you surprising histories, from the war hungry Kings who have shaped how things are counted today to the greedy merchants flooding Spain with Silver coins. So if your eyes usually glaze over when someone says ‘cutting taxes stimulates growth’, fear no more, we’ve got you covered.

Guest: Professor Richard Davies, The University of Bristol

Producer: Phoebe Keane

Researcher: Drew Hyndman

Editor: Clare Fordham

Theme music: Don’t Fret, Beats Fresh Music

A BBC Long Form Audio Production for BBC Radio 4