Half of the world's population don't access the internet, and they're missing out on economic and social benefits says Dhanaraj Thakur, research director at the Web Foundation. Satellites might provide the solution to reaching people in remote areas according to Jason Knapp from the company Viasat and Larry Smarr from the University of Southern California. Dudu Mkhwanazi, CEO of Project Isizwe, describes the benefits of access for poor townships in South Africa.

(Photo: Internet users in the Ivory Coast, Credit: Getty Images)

The US unleashed what it calls its "toughest ever" sanctions against Iran. The Trump administration reinstated all sanctions removed under the 2015 nuclear deal, targeting both Iran and states that trade with it. They will hit oil exports, shipping and banks - all core parts of the economy.

But what difference will they actually make? Ed Butler hears from Professor Jeffrey Sachs of Columbia University, an outspoken policy advocate who thinks Trump's America First policies are endangering the very status of the dollar as the world's chosen reserve currency.

And to explain how a reserve currency works, Ed hears from Barry Eichengreen, a well-known currency expert and professor of economics at Berkeley in California. And the programme considers whether China's renminbi, or the euro, could ever take over from the mighty dollar.

Producer: Laurence Knight

(Picture: An Iranian protester burns a dollar banknote; Credit: Majid Saeedi/Getty Images)

How is America's industrial heartland faring two years into the Trump presidency? Fergus Nicoll visits the port of Duluth in the state of Minnesota and asks farmers, shippers and miners how the US-China trade spat has affected them.

Programme features interviews with Deborah DeLuca, executive director of the Duluth Seaway Port Authority; Kelsey Johnson, president of the Iron Mining Association of Minnesota; Randy Abernathy, owner of Industrial Weldors & Machinists Inc; and farmers Matt and Sara Weik, and Brad Hovel.

(Picture: Ship being loaded with iron ore at dock in Minnesota; Credit: PhilAugustavo/Getty Images)

As US health insurers ask customers to wear fitness trackers, are they opening a Pandora's Box of ethical dilemmas and business threats?

Ed Butler speaks to Brooks Tingle, chief executive of insurer John Hancock, which has been pioneering the controversial policy of rewarding customers willing to demonstrate that they exercise more. But Dr Michael Kurisu, director of the UCSD Center for Integrative Medicine in San Diego, asks what happens to those customers who refuse to participate? Plus the Financial Times' Undercover Economist, Tim Harford, talks us through the hazards and adversities of the insurance business, and why more information could obviate the purpose of insurance altogether.

(Picture: Young man checking his fitness tracker; Credit: kali9/Getty Images)

A caravan of migrants heading to the US-Mexico border has sparked more debate around immigration. Manuela Saragosa speaks to Reihan Salam, executive editor of the conservative magazine National Review, who argues that America's immigration policy has to move with the times. Aviva Chomsky, professor of history at Salem State University in Massachusetts, says the narrative of the American Dream has never been quite what it seems.

(Photo: Honduran migrants heading to the US border, Credit: Getty Images)

Brazil's new president Jair Bolsonaro says he doesn't know anything about the economy, so he's delegated economic reforms to a man called Paulo Guedes. Who is he? We ask the BBC's Daniel Gallas in Sao Paulo and speak to Gabriel Ulyssea, Brazilian economist and associate professor in development economics at Oxford University. And Chilean journalist Carola Fuentes tells us the story of the "Chicago Boys" - the free market economists who transformed Chile's economy under military dictatorship.

(Photo: Supporters of Jair Bolsonaro celebrate in Brasilia, Credit: Getty Images)

More than $4bn has already been raised by candidates running in the midterm elections in the United States. Ed Butler speaks to Shelia Krumholz, executive director of the Center for Responsive Politics and Charles Myers, chairman of Signum Global Advisors, on how Wall Street is giving more money to the Democrats this year. Michael Whitney from The Intercept describes Beto O'Rourke's record-breaking fundraising in Texas. And Mike Franz, co-director of the Wesleyan Media Project, discusses whether spending big on your campaign really matters.

(Photo: Stickers made available to voters in Iowa, Credit; Getty Images)

Thousands of paintings and antiques stolen by the Nazis and others remain in circulation on the art market, but just occasionally one gets returned to its rightful owner.

Manuela Saragosa speaks to two grateful beneficiaries. Penny Ritchie Calder is a warden at St Olave's church in London, which recently regained the 17th century statue of noted botanist and congregant Dr Peter Turner, while Sylvie Sulitzer got back a Renoir painting that belonged to her art dealer grandfather, in both cases some 70 years after they were stolen.

Professional art detective Chris Marinello of Art Recovery International guides us through the murky world of stolen artwork, while Lucian Simmons of the global auction house Sotheby's explains what the restitution department he heads is doing to identify and recover these items.

Producer: Laurence Knight

(Picture: Sylvie Sulitzer poses with the recovered Renoir painting "Two Women in a Garden" in New York; Credit: Spencer Platt/Getty Images)

Is the "always on" culture of work emails and messaging destroying our health? Should we have a legal right to switch off, like in France?

Manuela Saragosa explores the world of office Whatsapp groups and the blurring work-life balance, with Professor Mark Cropley of Surrey University, occupational health psychologist Gail Kinman of Bedfordshire University, and Ellen Temperton of solicitors Lewis Silkin. Plus entrepreneur Mitul Thobhani explains why at his tech company Baytree Labs he doesn't impose any division between work and home life at all.

(Photo: Woman rubbing eyes in bed while using smartphone. Credit: PRImageFactory/Getty Images)

Could drone technology solve our urban transport needs? Ed Butler explores the new generation of flying cars developers hope will be ferrying commuters around major cities in the next few years. Steven Tibbitts, chief executive of Zeva Aero, and Eric Bartsch of start-up VerdeGo Aero, give the sales pitch. Steve Wright, associate professor in aerospace engineering at the University of the West of England in the UK, gives the reality check.

(Photo: Prototype drone taxi on display in Dubai in 2017, Credit: Getty Images)

When governments need to raise money, they promise a reward in return for your investment. But how much - or how little - they're promising says a lot about the country, and if investors perceive it as risky to invest in or not. But why are analysts so obsessed over something called the bond yield curve? Pippa Malmgren, policy analyst, says at the moment there's nothing to be afraid of from what the curve tells us. Russ Mould from AJ Bell on the other hand says we should be careful. We try to make sense of this confusing curve.

(Image: A man stares at a confusing illustration of graphs on a blackboard. Credit: francescoch/ Getty Creative)

Overrun by bots and identity thieves, does the worldwide web need a fundamental overhaul?

Ed Butler reports from the Future in Review tech conference in Utah, where he speaks to two entrepreneurs offering partial solutions. Denise Hayman-Loa's firm Carii offers corporations safe spaces for secure online collaboration, while Steve Shillingford's Anonyome Labs helps citizens keep their personal data secret when active online.

But do such solutions go far enough, or does the internet a complete redesign? Ed speaks to one of its original architects, Larry Smarr of the California Institute for Telecommunications and Information Technology, as well as Berit Anderson, founder of the future tech media company Scout.

(Picture: Tangled network cables on white background; Credit: joxxxxjo/Getty Images)