How do you become the happiest country in the world?

The annual World Happiness Report is out and Finland has been named the happiest country for the eighth year in a row.

What makes the Finns so joyful? Emilia Jansson from the What in the World team breaks it down for you.

But, is happiness just a fleeting emotion or is there more to it? Sarah Jelbert, a lecturer who teaches courses on the science of happiness explains how you can improve your life satisfaction.

And we hear from Sweden and Costa Rica, two countries that rank in the top ten.

Instagram: @bbcwhatintheworld Email: whatintheworld@bbc.co.uk WhatsApp: +44 0330 12 33 22 6 Presenter: Hannah Gelbart Producers: Emily Horler and Maria Clara Montoya Editor: Julia Ross-Roy