Charlet Duboc travels to Colombia where a 2016 peace agreement between the government and the Revolutionary Armed Forces of Colombia (FARC) has seen the country embark on a unique experiment to try and end coca farming and production, but freeing Colombia from its cocaine problem is proving difficult. Taylor Wilson meets the scientists racing to build the first quantum computer, a device with millions of times more processing strength than all the computers currently on Earth combined. This technology will harness the unusual laws of quantum mechanics to bring unimaginable advances in fields like materials science and medicine, but could also pose the greatest threat to cybersecurity yet.

Gianna Toboni travels to the Bible Belt where wide support for Donald Trump in 2016, against a backdrop of scandals, has brought heavy media scrutiny and now some faith leaders are striving to move evangelicalism away from political associations. Ben Anderson heads to the Eastern Congo where up to six million people have been killed in an underreported crisis and reports on the ADF (Allied Democratic Forces), one of the least known, but most violent groups in the world.