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How do we know the time... precisely? The question is more complex than it first appears, says Richard Fisher.

Cancelled as a mission to Mars, a British robotic concept must now adopt lunar ambitions instead.

The scientist had a Eureka moment sparking his idea everything on Earth was interconnected.

The owner of Instagram and WhatsApp faces increased competition from the likes of TikTok.

The 170 carat "Lulo Rose" is the fifth largest diamond ever discovered in Angola's Lulo mine.

Religious practices have preserved an estimated 100,000-150,000 sacred groves across India, ensuring they remain biodiverse habitats home to an array of endangered species.

Expecting the very worst to happen in any given situation can harm mental health. How do we stop these toxic-thinking spirals?

Small groups of guerrillas, led by soldiers from the former Afghan army, have been taking on the Taliban.

The identity a man found dead on an Australian beach has baffled authorities for over 70 years.

Bishop Lamor Whitehead has defended his ostentatious lifestyle after the viral Brooklyn robbery.

Whether on email or face to face, subtle digs are all over the workplace. This insidious behaviour spares no-one – and it can grind down workers.

Moscow says it now wants to build its own station, ending more than 20 years of cooperation with the US.

One of the researchers said he hoped the studies would correct the false theory that it came from a lab.

From classical mythology to The Parent Trap, they have long been a potent subject for fiction. As new musical Identical opens, Natasha Tripney asks why writers are so drawn to them.

The vaccine being used to prevent monkeypox is made from a lost virus that no one has ever been able to identify. How has this happened? And could it still exist in the wild?

Some CEOs are permanently shutting office space to give up on hybrid set-ups and fully embrace working from home. Will others follow?

The Tempest fighter jet will have artificial intelligence tech to monitor and help the pilot.

Big Brother Watch campaigners says the "Orwellian" cameras at Southern Co-op shops breach people's rights.

Hundreds of plantations once symbolised the peninsula's wealth but were abandoned in the 1950s after a sudden downturn of fortune. Over the years, the jungle has taken them back.

The researchers have named it in honour of Sir David Attenborough.

Pope Francis "begs forgiveness" for the Catholic Church's role in abuse against indigenous peoples.

What started as attacks on women and children, now include the elderly and adult men, officials say.

How Brazil, the world's largest grower of coffee, is turning to technology to boost production.