Today in Focus talked to the climate change activist Greta Thunberg in March about the campaign of school strikes she started. As part of a series looking back at some of our favourite episodes of 2019, she told our environment editor Jonathan Watts how it all began

This episode was originally released on 14 March 2019

This week we return to some of our favourite episodes of the year. Greta Thunberg spoke to Today in Focus in March, before her transatlantic voyage to address the UN.

One day in mid-2018, Greta Thunberg skipped school and went to sit outside the Swedish parliament with a homemade banner that read skolstrejk för klimatet or “school strike for climate”. By March 2019, her sign had been translated into dozens of languages and her school strike protest had spread to more than 70 countries.

She told the Guardian’s global environment editor, Jonathan Watts, how it all began and what she made of the attention she generated.