It's 200 years since the word "hello" was first used in print - though its roots date back to the 15th Century. How has the language of greetings evolved - and what does it tell us?

Paul Robeson was a superstar of the stage and screen, a talented football player and a music hitmaker. Then came a dramatic fall from grace.

The HBO banking drama has just kicked off its fourth series, amid serious hype and with a starrier cast than ever. It's also taking its story – and characters – to chilling new places.

The latest spin-off from Game of Thrones tells the story of an inexperienced knight and his cheeky squire. With its mix of brutal drama and plentiful humour, it's a "nailed-on winner".

Treetop living is not just for kids. These architect-designed, "nest-like" dwellings – created in forests all over the world – are the ultimate sky-high retreats from urban living.

Success for Jessie Buckley, Hamnet and One Battle After Another at the Golden Globes has narrowed the Oscars race and set up a number of intriguing fights to watch.

Her murder mysteries have captivated audiences for more than a century, but, 50 years after her death, she remains an enigma. A BBC profile from 1955 reveals some of her secrets.

The CIA officer, who has died, aged 84, sold secrets to the Soviet Union, leading to the deaths of at least 10 Western agents. In 1994, the BBC spoke to one of the spies Aldrich Ames betrayed.

When an oil embargo rocked the US, the president's radical solution was to make citizens start their working days an hour earlier – even in the darkness of midwinter.

With his mocking English accent, the mysterious radio host broadcast to the UK from a German station, spreading rumours and exaggeration in the early days of World War Two.

In a daring raid 75 years ago, four university students stole back an early symbol of the Scottish kings. It had been taken by an English monarch more than six centuries before.

The pioneering primatologist debunked myths about gorillas. Forty years on, her killer remains unknown.