The latest stories from the Home section of the BBC News web site.
Updated: 41 min 11 sec ago
Former US President Jimmy Carter told the BBC that the five presidents who served after him could have done more to make progress toward Middle East peace.
The evidence for an ocean of water under the surface of one of Saturn's moons is overwhelming, according to scientists. Pallab Ghosh reports.
Veteran US late-night TV host David Letterman is to retire in 2015, broadcaster CBS has announced.
The European Union begins the roll-out of its multi-billion-euro series of Earth-observation satellites called Sentinels.
Ukraine's special police were behind the killings of dozens of anti-government protesters in Kiev in February, an initial government inquiry finds.
Russia's Federal Security Service detains 25 Ukrainians it accuses of planning terrorist attacks around last month's Crimean referendum.