Edward Snowden has spent the last six years living in exile in Russia and has now decided to publish his memoirs, Permanent Record. The Guardian's Ewen MacAskill, who helped break Snowden's story in 2013, has been given exclusive access to interview him
Octopus, squid and cuttlefish have strange, massive, distributed brains. What do they do with all that neural power? Dive into the ocean with marine biologist Roger Hanlon, who shares astonishing footage of the camouflaging abilities of cephalopods, which can change their skin color and texture in a flash. Learn how their smart skin, and their ability to deploy it in sophisticated ways, could be evidence of an alternative form of intelligence -- and how it could lead to breakthroughs in AI, fabrics, cosmetics and beyond.