BBC: Greenpeace has apologised for any "moral offence" it has caused, after a publicity stunt on the ancient Nazca lines in Peru.
Activists from the organisation placed a banner next to a figure of a hummingbird, carved more than 1,500 years ago.
They were hoping to increase pressure on UN negotiators currently meeting in Lima.
The Peruvian government said it would prosecute the activists who took part.
The ancient depictions of animals, including a monkey and a hummingbird that are etched...