In April 2019, Thunberg was contemplating what she would do if she were invited to speak at either the 2019 UN Climate Action Summit in New York or the 2019 United Nations Climate Change Conference in Santiago, Chile. Appearing at either event would require her to travel across the Atlantic Ocean. She told reporters that although she would not fly, she might sail by way of container ship, since she believed that would have the smallest carbon footprint.