Thunberg says 'you haven't seen anything yet' to world leaders

Swedish activist Greta Thunberg on Friday addressed hundreds of people at a climate march in Lausanne, Switzerland.

Thunberg spoke to the protesters on what she claimed was the one-year anniversary of the first Friday climate rallies in the country.

She said she had a message for world leaders "you haven't seen anything yet", in regards to the environmental protest movement.

The protest was held ahead of next week’s World Economic Forum in the Swiss resort of Davos.