“We can no longer save the world by playing by the rules,” says Greta Thunberg, “because the rules have to be changed.”

“On climate change,” said Kevin Anderson, professor of energy and climate change at the University of Manchester, the teenage Thunberg “demonstrates more clarity and leadership in one speech than a quarter of a century of the combined contributions of so called world leaders. Wilful ignorance and lies have overseen a 65 percent rise in CO2 since 1990. Time to hand over the baton.”

Watch Thunberg’s full remarks:

The climate crisis, she said, “is the biggest crisis humanity has ever faced. First we have to realize this and then as fast as possible do something to stop the emissions and try to save what we can save.”