The latest stories from the Home section of the BBC News web site.
Updated: 21 min 52 sec ago
The mystery of Mercury's dark surface can be explained by a steady dusting of carbon from passing comets, research suggests.
A museum defends a decision to exhibit graphic images of beheadings by the Islamic State militant group.
Author and broadcaster Stephen Fry swears off Instagram, claiming to have been "hounded off" the photo-sharing service.
Six key points to understanding what the crisis over Iran's nuclear programme is all about.
South African is surprise replacement for Jon Stewart
At least 45 people have died in a blast near a refugee camp in western Yemen, aid workers say, but officials deny Saudi air strikes were the cause.
Free nursery places for three-year olds have helped mothers back to work, but have made "no difference" to academic performance later on, researchers claim.
Four people including a British man and two children have been found dead in a flat in Gibraltar, police in the British territory have said.
Everton's Ross Barkley says he is best played as a striker, despite most of his career being as an attacking midfielder.
A 14-year-old schoolboy from the Neath Valley tells how he was hospitalised after taking a "legal high".
The BBC's Carole Walker took a look inside the Conservative Party's campaign bus, as it headed off to its first election rally.
Up to £800,000 raised from the tax on plastic bags could help sustain environmental groups whose funding was slashed in the Stormont budget.
Teachers should ignore rules on promoting "fundamental British values", a teachers' union conference has heard.
Former Welsh rugby international Ian Gough appeals his conviction for assaulting his ex-girlfriend, model Sophia Cahill.
If a framework for an Iranian nuclear deal is agreed this week, it could pave the way for one of the most significant, but most sensitive, accords in decades, says the BBC's Lyse Doucet.
Italian online fashion retailer Yoox says it is in merger talks with London-based rival Net-a-Porter.
At least 10 people are missing, feared dead, in Burundi after landslides which have destroyed hundreds of home, officials say.
Paul Brennan talks to the BBC about sending a drone up to herd his sheep.
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Local media are reporting that shots have been fired at the headquarters of the NSA outside of Washington.