'Our leaders are like children,' school strike founder tells climate summit

Greta Thunberg, 15, told UN summit that students are acting in absence of global leadership

Action to fight global warming is coming whether world leaders like it or not, school student Greta Thunberg has told the UN climate change summit, accusing them of behaving like irresponsible children.

Thunberg began a solo climate protest by striking from school in Sweden in August. But more than 20,000 students around the world have now joined her. The school strikes have spread to at least 270 towns and cities in countries across the world, including Australia, the United Kingdom, Belgium, the US and Japan.