Innovation in packaging and refrigeration can reduce waste – as can changes in behaviour
Glimpses of the new Hobbit and Hunger Games, along with Sin City 2 and Horns were among studio hopefuls on offer to comic-book fans at the San Diego convention, reports Ben Child
Regularly updated scrolling news, videos, gossip and time-wasting malarkey, from the people who brought you the Guardian Guide. Coming up today: Karen O, Joy O, Jackie O (maybe) and Christopher Walken wants to be like you-oo-oo
Even with a drop in audience, Dawn conquers the Dwayne Johnson togafest in the UK, with a potential boost from summer holiday viewers, writes Charles Gant
The free chat app, which has taken the iTunes chart by storm, has the potential to be the pen pal scheme for the internet generation. By Hannah Jane Parkinson
New batch of films confirmed for festival, including Michael Winterbottom's The Face of an Angel and Kevin Smith's Tusk
Despite attempts by the National Security Agency to crack the anonymous browser, the US increased state funding through third parties. By Alex Hern
Ryan Fox's swirling, spinning film, made by attaching a GoPro camera to one of his tyres, reminds us how hippies changed our entire definition of beauty, writes Jonathan Jones
Google Trends shows a spike in searches from people simply for 'iPhone slow' the moment Apple releases its latest model. By Samuel Gibbs
Dating service's co-founder claims it lied to users to test theory about compatibility. By Alex Hern
Can the social network convince investors that the future's bright – or is the 'Twitter quitter' becoming a real headache?
Gamer's channel still ahead of Shakira, Pitbull and Katy Perry, while Psy's Snoop Dogg Hangover returns him to top 10. By Stuart Dredge
We want to see your unlikely memorabilia. Do you own something that makes a giant Tunnock's teacake seem like a sensible purchase?
The star of The Social Network, Now You See Me and the forthcoming eco-terrorism thriller Night Moves – plus a certain Batman v Superman movie – was with us to answer your questions about his career. So what did he say?