7 Sep 2014: Peter Preston: The number of abductions like Steven Sotloff's is startling. Does disguising the extent of the danger only threatens others?
3 Sep 2014:
How many viewed the gruesome beheading or private images of Jennifer Lawrence and other stars? Online data gives us a fair estimate, writes Charles Arthur
2 Sep 2014:
Monitoring group Site Intel says it has seen video of Steven Sotloff being killed, two weeks after murder of American journalist James Foley
We look back at Apple's tech products, including game-changers such as the iMac and iPhone, curiosities like Lisa – and duds, like the 20th Anniversary Macintosh