Mark Zuckerberg writes an open letter calling for new laws to monitor internet content.

World number 52 Lucas Bjerregaard beats Tiger Woods to reach the semi-finals of the WGC Match Play in Austin, Texas.

Huddersfield captain Christopher Schindler feels "empty" after the Terriers' relegation from the Premier League was confirmed by defeat at Crystal Palace.

James Forrest's 86th-minute winner earns Celtic a pulsating victory over Rangers and moves them 13 points clear at the Scottish Premiership summit.

The main suspect in the mosque massacre was familiar with Austria's far-right scene.

Some of the world's most famous landmarks are plunged into darkness to draw attention to climate change.

A judge says marking the 1964 coup does not amount to rewriting history or hiding the truth.

Each week, we publish a gallery of readers' pictures on a set theme. This week it is "sparkle".

A lawsuit claims reckless behaviour by storm chasers before a fatal crash. Is there a wider problem?

One school apparently shot teachers "execution style" with pellets as part of a rehearsal for the real thing.

Victor Willis, the pop group's singer and songwriter, has overcome legal battles and rehab.

Brazil's Brumadinho dam disaster is having consequences in towns which are near similar dams.

A film about Prime Minister Modi is facing criticism for mythologising him ahead of a national vote.

A letter from a mother worried about female students wearing leggings has sparked protests.

Lyft is the first tech company to float this year but the $24bn business is yet to make profit.

Petro Poroshenko is seeking re-election but the surprise front-runner is comic Volodymyr Zelenskiy.

An investigator working for Jeff Bezos says Saudi Arabia accessed data on the Amazon boss's phone.

Pyongyang calls for an investigation and says it is watching rumours that the FBI played a role.

What is the pressure really like if you are a Premier League referee? And how do they react when something goes wrong?

Theresa May is under pressure from some senior Brexiteers to rule out a customs union with the EU.

Real Madrid boss Zinedine Zidane says Manchester United's Paul Pogba, who has been linked with a move to the Bernabeu, "knows how to do everything on the pitch".