Teenage Environmentalist Thunberg Sails for US August 16, 2019 / activist360 / Leave a comment Environmentalist Greta Thunberg has set sail on a two week voyage from the UK to the US. The teenager, who says she’s stopped flying to limit her carbon footprint, will cross the Atlantic on a high tech racing yacht. But as Sarah Morice reports, the trip will be far from luxurious.