Called string kid by Brazilian President Jair Bolsonaro on Tuesday, mocked by Donald Trump and named Person of the Year by Time Magazine on Wednesday as well as taking part in the climate summit in Madrid. After a least hectic week for 16-year-old climate activist Greta Thunberg, she now has the backing of Michelle Obama on Twitter, writes the Guardian.

Michelle Obama writes to Thunberg in connection with a visit to Vietnam: "Just like the girls I've met in Vietnam and all over the world, you have so much to give us all."

Trump: "So ridiculous"

"So ridiculous" Donald Trump wrote on Twitter following the appointment of Times Magazine on Wednesday. "Greta has to work on her aggression problems" and "Chilla, Greta, chilla!"