Dr Hugh Lewis examines the threat posed by growing amounts of space junk, and outlines some possible solutions.
Israel takes the unusual step of jailing a suspected Jewish militant without trial following the death of a Palestinian infant in an arson attack.
David Cameron demands a timetable for the publication of Sir John Chilcot's inquiry report on the 2003 Iraq war "pretty soon".
UK economic growth is set to slow down in the third quarter, the National Institute of Economic and Social Research said.
Security experts give a live demonstration of mobile phone spyware
As the National Museum of the Royal Navy prepares to open HMS M33 to the public for the first time, the restoration project's director explains some of the ship's features.
Rick Perry, the former governor of Texas, is not among the 10 White House hopefuls who will take part in the first Republican debate.
The results of the post-mortem examination on Cilla Black and confirmation more police forces are investigating Sir Edward Heath are the focus for the front pages.
The number of UK workers who routinely work nights is on the rise, according to trades union body the TUC.
Sir James Dyson offers the business advice he wishes he had when he started out, as part of the BBC News series, CEO Secrets.
Sabir Massih, the hangman responsible for at least a quarter of the executions in Pakistan, speaks to Shaimaa Khalil in Islamabad.
Authorities in the Libyan capital Tripoli investigate a video that appears to show Saadi Gaddafi and other prisoners being beaten in jail.
Manchester United's Angel Di Maria says he is "very happy" to be joining Paris St-Germain, a year after moving to Old Trafford.
Disney posted a 5% increase in revenue for the three months to 27 June - but missed expectations for the first time in eight quarters.
The family of a black woman who died in police custody announces legal action against Texas authorities.
Undefeated Floyd Mayweather will attempt to match Rocky Marciano's record of 49 victories without defeat against Andre Berto.
Scientists solve the riddle of why precariously balanced rocks near the San Andreas fault have never been toppled by earthquakes - revealing crucial interactions between faultlines.
Countering the sanitised US narrative of Hiroshima
In August 1945, former medical officer Shuntaro Hida survived the world's first atomic bomb attack on Hiroshima.
Labour leadership contender Andy Burnham promises to renationalise Britain's railways "line by line" if he becomes prime minister.