In a Reddit thread, the Microsoft founder expresses his concerns about digital currencies like Bitcoin.

The BBC meets the families and friends waiting for news of the schoolgirls kidnapped by Boko Haram.

The AI code found quirks in the Atari game code that let it score a lot of points, researchers found.

Snow and freezing weather causes disruption to sporting fixtures scheduled for the coming days.

Evidence suggests leader Kim Jong-un and his father fraudulently obtained passports from Brazil.

How have the lives of three people with dementia changed three years on from when we first met them?

It's not Australia's first same-sex wedding, but it is the first on top of the Sydney Harbour Bridge.

The Syrian Red Crescent says it evacuated an elderly Pakistani and his wife from the Eastern Ghouta.

The National Front leader could face prison over graphic images she posted on Twitter.

Houston Rockets superstar James Harden produces some outrageous showboating, humiliating Wesley Johnson of the Los Angeles Clippers.

The former Prime Minister Tony Blair tells Brexitcast he believes Brexit is "an historic mistake" and "if there's any way we can undo it then we should".

For several decades, the UK sent children across the world to new lives where many were abused.

A man was killed and six other people were seriously wounded in a supermarket last July.

Media reports link the malware attack to a notorious Russian hacking group known as Fancy Bear.

Iran says the women were temporarily held in Tehran at a match attended by Fifa's president.

Far-right Vice-Chancellor Heinz-Christian Strache lost a case over activists' "public insults".

World champion Lewis Hamilton signs off the first week of pre-season Formula 1 testing with an imposing fastest time.

Great Britain javelin coach David Burrell is suspended from all sport for four years following an anti-doping rule violation.

Mr Trump says "we haven't been treated fairly by other countries" but experts fear a trade war.

The amateur diver's chance discovery while looking for shark teeth is described as "unprecedented".

Mark Lawrenson takes on British athlete Katarina Johnson-Thompson to predict this weekend's Premier League fixtures.