Cannes Lions: live from the Guardian speakers' lounge
Havas CEO Yannick Bolloré: tech is now a big part of our business - video
Yannick Bolloré, chairman of the communications company Havas, joins the Guardian's Mark Sweney in the Speakers' Lounge at the Cannes Lions advertising festival. He discusses the failed Publicis-Omnicom merger and why advertising firms are increasingly acquiring technology start-ups
Lemz co-founder Mark Woerde: how our creative agency helped catch paedophiles - video
Neil deGrasse Tyson of Cosmos: A Spacetime Odyssey: 'Science needs a little bit of marketing' - video
Unilever's Keith Weed: Mobile phone marketing is the key to reaching remote areas - video
BBH's John Hegarty: 'Digital messiahs are like the Taliban' - video
Jerry Buhlmann on the failed Publicis-Omnicom merger: 'two cruise liners don't make a speedboat' - video
Justin Bieber's manager Scooter Braun: I'm not in the music business, I'm in the branding business - video
Steven Moffat: Sherlock and Doctor Who are successful in the US because they are quintessentially British - video
Jason Silva: 'the kid in the garage' will control the future of tech, not Google - video
Walking Dead producer: Google must do more to combat piracy - video
Erin McPherson of Maker Studios on how Disney's new acquisition will help it connect with millennial audience - video
Vice Media's Eddy Moretti: 'We don't want to be sell-outs' - video
Downton Abbey executive producer Gareth Neame: No end in sight for show - video
Spotify's Chris Maples: We've paid record labels more than a billion dollars - video
AOL's Tim Armstrong: We expect Arianna Huffington to sign a new contract - video
BuzzFeed's Jonah Peretti: Our site appeals to head, heart and funnybone - video
Dynamo: brand partnerships helped launch my career as a magician - video
Cosmopolitan editor Joanna Coles: we can do 'serious' as well as sex - video
