If you prefer to use the UK version of Google rather than the .com version you may already have seen 'in depth' articles in your search results. For those people who use google.com this is something that we've seen for some time. Basically Google will provide you with 3 articles related to your keyword, and you'll find them towards the bottom of the page of results. The idea is that you'll continue to use Google as a self contained ready reference tool, but unfortunately as my screenshot shows, I'd have to question the value of the articles that they find.
Does Google seriously think that articles written in 2009, 2011 and 2012 are going to be the most helpful ones out there? A search for surveillance also gave me articles from 2012. How is this helpful? In comparison, Silobreaker gave me a huge wealth of material, both current and archival, with video, images, in focus pieces, networks, blogged material, quotes, press releases and a whole host more. Google can't lay a glove on a resource as comprehensive, authoritative and current as that. Too little, too late Google.