Greta Thunberg, a Swedish 16-year-old climate change activist who rose to stardom after her speech to Swedish parliament, has cancelled her plan to speak at Quebec’s National Assembly on September 27th. She crossed the Atlantic earlier last month, to make up for the 15-day boat journey across the Atlantic.

The young activist made the decision due to the pollution generated by air travel. Thunberg made this trip in preparation for the ONU Climate Summit on September 23rd which she will be attending in addition to multiple other speaking engagements.