Any moves to modify the concrete Los Angeles River, to return parts of it to a more natural setting or to capture water, must not compromise its flood-protection function, say scientists.
The parents of James Holmes, the man charged with killing 12 and injuring 70 in a 2012 Colorado theatre massacre, have pleaded he be spared the death penalty.
One of Sierra Leone's top doctors, Victor Willoughby, died from Ebola hours after the arrival of experimental drug ZMab, medical officials say.
An intruder who fatally stabbed a man at a flat in Glasgow faces a life sentence after being convicted of murder.
Shares in Blackberry drop nearly 6% as the troubled smartphone maker reports a larger-than-expected drop in revenue during the third quarter.
The BBC profiles victims of the Taliban school massacre
Chelsea's Eden Hazard will sign a new contract and could become one of the club's greats, says Jose Mourinho.
Family photo reveals 2014's hot gadget in use in 1920s
An MP who received 2,500 racist tweets in three days calls for social media companies not to "host hate" on their sites.
A young boy has become the fourth fatality after a motorist slammed into a crowd in front of a California church.
Man Utd manager Louis van Gaal's news conference is interrupted by an announcement on the club's public address system.
The chief executive of Renault Nissan says manufacturers in Russia are facing a "bloodbath" because of the plunge in the value of the rouble.
Former Liverpool player Kenny Dalglish has been describing the "mayhem" at Hillsborough during the disaster, when he was the club's manager.
A mother collapses and dies just days before Christmas of the rare heart condition sudden arrhythmic death syndrome.
A woman fatally stabbed on a north-west London street may have been the victim of a parking row, it emerges.
A court releases a top newspaper editor but says four others must stay in custody as part of a crackdown on support for cleric Fethullah Gulen.
For 2014, there is evidence to suggest more people than ever have shopped online, especially in rural areas where 9 out of 10 people shop online.
Apple has said it is "deeply offended" by a BBC investigation into conditions for workers involved in manufacturing its devices.
A 47-year-old man admits the murder of a Flintshire woman who was found strangled and with head injuries.
Team news as Gloucester host Bath in Saturday's Premiership fixture at Kingsholm Stadium (17:30 GMT).