In the wake of the US government shutdown, economics editor Larry Elliott looks at the global economic impact of the closure

The Guardian's Nick Hopkins outlines the questions raised by the latest revelations from US National Security Agency whistleblower Edward Snowden

Ticckle is a new online platform for debate where participants submit a 30-second video outlining their argument, and others respond with their 30-second videos. Users are expected to remain identifiable. Here, Vanessa Thorpe, the Observer's arts and media correspondent, makes a one-minute argument for improving online debate

Ian Black asks what the future may hold for the Islamist party - and what impact its removal from power in Egypt will have on Islamic politics in the wider region

Middle east editor Ian Black discusses the Israeli report into the death of Muhammad al-Dura, a 12-year-old Palestinian boy who was shot in Gaza in 2000

Jobseekers are being made to complete bogus psychometric tests by the Department for Work and Pensions or face losing their benefits

Ian Sample discusses the findings of a medical study that identified genetic markers for breast, ovarian and prostate cancer

Economics editor Larry Elliott asks if Cyprus's financial crisis might become a Lehman Brothers moment for the eurozone

Transport correspondent Gwyn Topham discusses the implications of Friday's high court ruling

Eight horses slaughtered in the UK have tested positive for the veterinary painkiller bute. Felicity Lawrence explains the consequences

Health correspondent Denis Campbell outlines what Robert Francis's report on Stafford general hospital means for the NHS and Department of Health

Denis Campbell discusses the impact of Jeremy Hunt's announcement on Lewisham health services

Economics correspondent Phillip Inman discusses the figures and the pressure now on chancellor George Osborne to consider a 'plan B' to stimulate growth

The Guardian's science correspondent Ian Sample explains why we are running out of effective antibiotics

Josh Halliday says police may now be forced to reinvestigate thousands of historic sexual abuse complaints against Jimmy Savile

Music editor Caspar Llewellyn Smith explains how David Bowie took everyone by surprise with the announcement on his 66th birthday of his first new recordings for ten years and the release of his new single Where Are We Now? However, he has declined all interviews and will not be touring

Dan Sabbagh gives his reaction to the Pollard report, which looked into the BBC handling of and fallout from the decision to axe a Newsnight investigation into child sexual abuse by Jimmy Savile

Felicity Lawrence discusses who the private companies wanting to get in on the new opportunities in the health service are and the impact it will have on patient care