Lisbon (dpa) - The Swedish climate activist Greta Thunberg is after her renewed sailing trip across the Atlantic back on the European mainland. The catamaran with the 16-year-old on board entered a port in the Portuguese capital Lisbon. Thunberg went ashore with her protest sign saying "School strike for the climate" under her arm. She wants to travel by train to Madrid, where the World Climate Change Conference is currently taking place.