From BBC News
- Greeks vote in 'make-or-break' poll
- Greeks vote in general elections, with the anti-austerity Syriza and the centre-right New Democracy parties seen as front-runners in a tight race.
- India braces for Obama's Delhi visit
- US President Barack Obama is due to arrive in India for a three-day visit, protected by one of India's biggest-ever security operations.
- Eyes on Pluto for historic encounter
- Nasa's mission to Pluto gets under way in earnest as the New Horizons probe starts taking the pictures needed for July's close flyby.
- US planes targeted by bomb threats
- Police search two aircraft at Atlanta's airport after receiving "credible" bomb threats - but later give the all-clear.
- Japan PM outrage at 'hostage death'
- Japan says it is seeking to verify a video that suggests hostage Haruna Yukawa has been killed by IS militants.
- Rockets kill 30 in eastern Ukraine
- Eastern Ukraine rebels have launched an offensive on the city of Mariupol, one of their leaders says, as rockets kill and injure dozens in the port city.
- Lungu wins Zambia presidential poll
- Defence Minister Edgar Lungu wins Zambia's presidential election for the governing Patriotic Front with 48.3% of the vote.
- Venezuelans protest over shortages
- Thousands of Venezuelans attend an opposition march blaming failed government policies for widespread shortages.
- Spain arrests jihadist suspects
- Four suspected Islamist militants "prepared and willing to attack Spain" are arrested in the Spanish territory of Ceuta bordering Morocco, police say.
- Argentina probes key witnesses
- Investigators continue to question key witnesses over the death of top Argentine prosecutor Alberto Nisman, whose body was found at his apartment a week ago.
- Tangerine Dream's Froese dies at 70
- Edgar Froese, the founding member of the German ambient electronic group Tangerine Dream, dies in Vienna at the age of 70.
- VIDEO: Brazilians told to save water
- Brazil's Environment Minister Izabella Teixeira has said the country's most populous region is experiencing its worst drought since 1930.
- VIDEO: Body clocks and blindness
- Our eyes are key to resetting our body clocks. So what happens to people who can't see anything at all?
- VIDEO: Killer whale could be set free
- In the next few days the authorities in the United States will decide whether to put killer whales on the list of endangered species.
- VIDEO: One-minute World News
- Watch the latest news summary from BBC World News. International news updated 24 hours a day.
- VIDEO: Should spelling be simplified?
- The English Spelling Society is drawing up a list of proposals to make it easier for children to learn to spell, including removing silent letters.
- VIDEO: What is King Abdullah's legacy?
- Frank Gardner looks at the legacy of Saudi Arabia's King Abdullah, who died on Thursday
- VIDEO: Goodbye gadgets: SkyMall files for bankruptcy
- SkyMall, the catalogue found on most US airlines and popular for selling quirky products like garden gnomes and "orbit wheels", has filed for bankruptcy.
- VIDEO: Mortdecai 'criminally fun to make'
- Johnny Depp talks about his latest film Mortdecai and why he can sometimes be found on the wards of Great Ormond Street Hospital.
- Who killed Alberto Nisman - and why?
- The death of former state prosecutor Alberto Nisman leads to conspiracy theories and questions in Argentina, the BBC's Wyre Davies reports from Buenos Aires.
- Abortion fight: House Republicans accused of 'incompetence'
- Speaker John Boehner is attacked from the left and the right after a bill banning abortions after 20 weeks is derailed.
- Little public appetite for electoral fray
- The coming election campaign is likely to be closely fought and bad-tempered, says Rob Watson - but will the electorate be engaged?
- Appy days: Must see tech stories
- Rory Cellan-Jones, technology reporter and presenter of the Tech Tent radio show, gives a round-up of the BBC's coverage of the week's big tech stories.
- VIDEO: Why Saudi matters - In 90 secs
- Why does Saudi Arabia matter so much to the outside world? BBC News explains its significance - in 90 seconds.
- Can Cuba get off US terrorism list?
- The US and Cuba have begun their historic negotiations to re-establish diplomatic relations, but one US policy remains a stumbling block for Cuba.
- This is what a 'poonado' looks like
- Photographer Keri Wilk was in the water when a whale released an unusually large bowel movement.
- Rare Sumatran tigers born at zoo
- A trio of critically endangered Sumatran tigers cubs are born at Chester Zoo.
- ECB warns over "weakened" EU project
- A top official at the European Central Bank warns that unemployment and low growth are undermining the European Union.
- Ukraine bailout 'credibility' boost
- Ukraine's new finance minister Natalie Jaresko says a proposed bailout package from the International Monetary Fund will be "sufficient to rebuild credibility" in the country's economy.
- Reporter jailed for stolen data links
- A journalist with connections to the hacking collective Anonymous is sentenced to five years in jail after posting online links to stolen data.
- US plans 'regulated' Bitcoin exchange
- High-profile Bitcoin backers are seeking to establish a Bitcoin exchange in the US that would be overseen by mainstream financial regulators.
- Cooper brings Elephant Man to London
- Three-time Oscar nominee Bradley Cooper is to play the Elephant Man in London following the critical acclaim he has received for the role on Broadway.
- Artes Mundi winner shares prize cash
- Theaster Gates says he will share his £40,000 Artes Mundi winnings with the nine other shortlisted artists.
- Jellyfish 'can sense ocean currents'
- A jellyfish tagging study reveals the creatures' ability to swim against the current when forming their submarine swarms, say researchers.
- Comet shows off its 'goosebumps'
- Scientists working on Europe's Rosetta mission say they may have found evidence for how comets are formed.
- Ebola vaccine 'shipped to Liberia'
- The first batch of a vaccine against Ebola is on its way to Liberia and trials are expected to start soon.
- Falling Ebola cases 'turning point'
- There has been a "turning point" in the Ebola crisis with cases falling in all three affected countries, World Health Organization officials say.
- Dimitrov expects 'different' Murray
- Grigor Dimitrov expects a tougher test from Andy Murray at the Australian Open than when he ended his Wimbledon reign.
- Mourinho 'ashamed' of FA Cup exit
- Jose Mourinho is "ashamed" by the loss to Bradford City, while Manchester City also lose on a day of shocks in the FA Cup.
- The sheikh who listened to Nazi radio
- Early in World War Two, Britain's agent in Sharjah noticed an alarming rise in support for Nazi Germany - so he slipped on a disguise to find out who was responsible.
- The lost sons
- The story two murdered teenage boys, an Israeli and a Palestinian, whose mistake was to stand by the side of a dark road.
- Fake bank swindles China savers
- Building was made to look just like a real bank with uniformed staff serving customers.
- Ghana official wears wife's coat
- Ruling party official laughs off criticism for donning the fur-trimmed number on visit to Germany.
- UN 'not needed to defeat Boko Haram'
- Nigeria does not need the help of UN or African Union troops to take on Boko Haram, the country's national security adviser tells the BBC.
- Bid to raise AirAsia fuselage begins
- Salvage teams begin an operation to raise the fuselage of AirAsia flight QZ8501, which crashed into the Java Sea last month killing all 162 on board.
- Man linked to Jewish museum killings
- Belgian authorities are looking for a possible accomplice of Mehdi Nemmouche, the gunman charged with killing four people at a Jewish museum in May.
- Brazil in 'worst water crisis'
- Brazil's Environment Minister Izabella Teixeira says the country's most populous states are experiencing their worst water crisis since 1930.
- World leaders pay respects in Riyadh
- World leaders gather in Saudi Arabia to offer condolences after the death on Friday of King Abdullah at the age of 90.
- US woman jailed for plotting IS help
- A young Colorado woman is sentenced to four years in jail for trying to provide material support to the militant group Islamic State.
- UK Ebola nurse 'happy to be alive'
- British nurse Pauline Cafferkey tells the BBC she is "very happy to be alive" as she is discharged from hospital, having made a full recovery from Ebola.
- UKIP MEP Bashir defects to Tories
- A UKIP MEP has defected to the Conservatives, but his former party said it had suspended him over financial and employment concerns.
- £2.9bn child support 'uncollectable'
- Billions of pounds owed in child maintenance may never be recovered, government accounts show - though ministers say the debts are not "forgotten".
- Junior rugby campaign urges silence
- Parents and coaches at junior rugby matches in Yorkshire are being asked to watch in silence as part of a drive to "challenge pitch-side behaviour".
- Week in pictures: 17-23 January 2015
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- Day in pictures: 23 January 2015
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- Your Pictures
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- The islanders who don't want a bridge to the mainland
- The islanders who'd rather not be linked to the mainland
- Why tyrants are afraid of art and beauty
- Why tyrants are afraid of art and beauty
- VIDEO: Baseball's unhealthy habit
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- VIDEO: Laughing the Indian America way
- A comedian's take on India US relations
- Your pictures: Cold weather
- Readers' photos on the theme of 'cold weather'
- Weekendish: The best of the week's reads
- The best features you may have missed this week
- The man trapped in constant deja vu
- What causes deja vu - and how does it feel to have it constantly?
- Go Figure: The week in numbers
- A look back at the week in numbers
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