Royal wedding in 2018

There have been stories for a while that Prince Harry and his girlfriend, actress Meghan Markle, are planning to get married. This week, their engagement was announced in a garden full of reporters, film crews and photographers.

The couple will get married in May next year in Windsor Castle, which has its own beautiful chapel in the grounds. It is not likely that Ms Markle will be called Princess Meghan – the Royal Family tend to use different formal titles. She and Prince Harry are most likely to be called the Duke and Duchess of Sussex, which is a county south of London.

The couple gave some details about their time together and their plans in a TV interview.

• Ms Markle's engagement ring includes two diamonds which belonged to Harry's mother, Princess Diana. The other stone came from Botswana in Africa, where the two went camping on their third date. Prince Harry designed the ring.
• They met on a "blind date" – where a friend arranged for them to get together, but they hadn't previously met.
• Ms Markle, who is American, will take British citizenship and become a member of the Church of England. She will also give up her acting career – she has been starring in a legal drama called Suits.
• Prince Harry proposed marriage to Ms Markle as they cooked roast chicken in the house they are sharing in Kensington Palace in London.

Old Dr Who episode finally completed

Fans of TV show Dr Who are excited by the news that a "lost" story has now been completed, now as a film.

The story, called Shada, was written by Douglas Adams (author of the Hitchhiker's Guide to the Galaxy) and starred Tom Baker as the Doctor. Around seven hours filming was done but the show was not finished because production staff walked out on strike.

BBC Worldwide has found the original scripts and film, and completed the other scenes using the original actors' voices over an animation. Tom Baker, who played the Doctor between 1974 and 1981, also appears as an old man in the episode – he is now 83.

He was a very popular Doctor, wearing a long stripy scarf and offering sweets out of a paper bag. He said: "I loved doing Dr Who."

The episode is available on iTunes and also as a DVD from the BBC.

More UK women choosing not to have children

Women born in 1971 are twice as likely to have not had children than those born in the 1940s, new figures show. Also, the average number of children born to women has dropped from 2.2 to 1.9. Two-child families are the most common type, with numbers of large families falling.

Frying food can make it cloudy

Researchers in the UK have found that frying fatty food can change the weaterh.

They say that when droplets of cooking fat get into the atmosphere they form structures which turn into clouds. In cities like London, cooking fat makes up ten per cent of the particles in the air, so researchers think frying food could have an impact on clouds and rain.