#ClimateStrike: Millions take to the streets to save the world

What began as a protest by the Swedish teenager Greta Thunberg, who decided to skip school on Fridays to draw attention to the plight of the planet, has today been called the biggest mass demonstration in history. Millions of people have marched in the streets in 150 countries to protest about global warming. Many of the demonstrations have been led by young people inspired by Greta Thunberg.