Swedish climate change activist Greta Thunberg, 16, is testifying before Congress next week at the invitation of House Democrats.

Thunberg will appear Sept. 18 before a joint hearing of a House Foreign Affairs subcommittee and the Select Committee on the Climate Crisis.

She is among a group of young climate activists Democrats invited to testify at the hearing, entitled "Voices Leading the Next Generation on the Global Climate Crisis."

Thunberg is best known for founding an international movement called Fridays for Future, in which students skip school on Fridays to participate in demonstrations demanding action to combat climate change.

Last month she traveled across the Atlantic Ocean in an emissions-free solar-powered boat, instead of flying, to New York City ahead of her speech on Sept. 23 at the United Nations Climate Action Summit.

“We’re at the point where an entire generation has grown up in the climate crisis,” said Democratic Rep. Kathy Castor of Florida, chairwoman of the Select Climate Crisis Committee. “They know the science, they know the stakes and they know how to rise to the challenge. We need to rise with them."

[Opinion: Greta Thunberg's sailing won't help the climate at all]