(CNN) Greta Thunberg has had a busy week.

Greta Thunberg spoke before the House Foreign Affairs Committee, Europe, Eurasia, Energy and the Environment Subcommittee, and the House Select Committee on the Climate Crisis.

Thunberg, though, told Congress she didn't have any prepared remarks. Instead, she referred to the Intergovernmental Panel on Climate Change's special report on global warming, which reported a temperature increase of 1.5 degrees Celsius above pre-industrial levels.

"I am submitting this report as my testimony because I don't want you to listen to me, I want you to listen to the scientists," she said. "And I want you to unite behind the science. And then I want you to take real action."

.@GretaThunberg submits IPCC Special Report on Global Warming: "I don't want you to listen to me. I want you to listen to the scientists and I want you to unite behind science. And then I want you to take real action."



Full video here: https://t.co/IWtX1u8Q3b #ClimateChange pic.twitter.com/iip86NUie5 — CSPAN (@cspan) September 18, 2019

Strong words from the teenager, but this isn't the first time she's spoken up to governments.

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