Gus Papageourgiou of Macquarie Capital Partners sees potential for BlackBerry
Jesse Hirsh, president, Metaviews, on the Canadian company behind the chat and messaging app Kik that is launching its own digital currency
Jeff Tonken is president and CEO of Birchcliff Energy, a light oil and gas producer working in the Peace River Arch area of Alberta
Greg Priddy, director of global energy & natural resources for oil with the Eurasia Group, on OPEC's move to support prices
An audience member produces a leaflet he claims is from a mosque attended by the Manchester bomber's father.
BBC Newsnight's Gabriel Gatehouse has been investigating Salman Abedi's background.
The ex-secretary of state made some wisecracks as he gave a speech at Harvard.
They filmed as they explored mountains and deserts - decades later, their footage is going online.
Three people have been killed and hundred of homes destroyed as Russia declares a state of emergency.
While Star Wars fans are celebrating the 40th anniversary of the sci-fi epic CBC's Eli Glasner explores the dark side of Hollywood's blockbuster space series.
Here's how Norway is celebrating its fishy new bank note.
Residents are evacuated near a house which was being searched by anti-terror police.
Monarch briefly chats with patients at Royal Manchester Children's Hospital
Speaking to Nato leaders in Brussels, the US president also called for alliance members to pay more.
Film maker Jason Blum explains how you can make money-making movies on a low budget.
Africa Day is 25 May, it marks the creation of the Organisation of African Unity, now called the African Union.
Philippine president issues ultimatum to terrorists
The US president says member states should contribute "their fair share" of funding to the alliance.
US President Donald Trump pays tribute to the "beautiful lives" lost in Monday's bomb attack.
The president of the European Bank for Reconstruction and Development on globalisation and inequality.
The Queen met staff caring for some of the children injured in Monday's attack at Manchester Arena.
Medics speak about working to treat the victims of Manchester's bomb attack on Monday.
Actions by Islamist extremists will not go anywhere says expert on terrorism Gilles Kepel
CBC senior correspondent Adrienne Arsenault discusses what the investigation into the attack in Manchester has yielded so far