Leonardo DiCaprio was impressed when he met Greta Thunberg.
The actor shared a picture of himself with the climate change activist on Instagram.
He wrote he hoped “Greta’s message is a wake-up call to world leaders everywhere" and that the "time for inaction is over.”
He also praised the teenager for her work and said because of her he is “optimistic about what the future holds”.
The image has had almost 4 million likes since it was posted.
Greta Thunberg has helped start an international youth movement against climate change.
The Swedish teenager first staged a “School Strike for Climate” in front of the Swedish Parliament in August last year.
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